An electric current is the rate of flow of electric charge past a point or region. An electric current is said to exist when there is a net flow of electric charge through a region. In electric circuits this charge is often carried by electrons moving through a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionized gas (plasma).
An electric current is the rate of flow of electric charge past a point or region. An electric current is said to exist when there is a net flow of electric charge through a region. In electric circuits this charge is often carried by electrons moving through a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionized gas (plasma).
A good guide for personal or group/class revision. Suggestions and users comments will be appreciated, as this will help me to keep resources to a high standard. Please feedback if you have used any of the resources on sciencetutors.
Student ID 21973473 Exam 986056RR - Electricity and Elec.docxflorriezhamphrey3065
Student ID: 21973473
Exam: 986056RR - Electricity and Electronics
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.
Questions 1 to 25: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. An example of an atom that has no charge is one that has
A. 3 protons, 2 electrons, and 1 neutron.
B. 1 proton, 2 electrons, and 3 neutrons.
C. 3 protons, 1 electron, and 3 neutrons.
D. 2 protons, 2 electrons, and 1 neutron.
2. In a cathode ray tube, the number of electrons that reach the fluorescent screen is controlled by the
A. deflecting plate.
B. anode.
C. grid.
D. cathode.
3. To use your left hand to determine the direction of the voltage developed in a moving conductor in a
stationary magnetic field, you must point your
A. thumb in the direction of the magnetic flux.
B. forefinger in the direction of the lines of force.
C. thumb in the direction of the electromagnetic force.
D. forefinger in the direction of the motion.
4. The grid in a high-vacuum triode is usually kept negatively charged with respect to the cathode so that
the electrons may be
A. accelerated toward the anode.
B. accelerated toward the cathode.
C. attracted to the cathode instead of the grid.
D. attracted to the anode instead of the grid.
5. Which of the following does not affect the electrical resistance of a body?
A. Bodies directly surrounding the body
B. Material composing the body
C. Length of the body
D. Temperature of the body
6. If the resistance of an electric circuit is 12 ohms and the voltage in the circuit is 60 V, the current flowing
through the circuit is
A. 720 A.
B. 5 A.
C. 60 A.
D. 0.2 A.
The following question is based on the figure below.
7. If you want to stop the current flow through Device 3 in the circuit shown above, which one of the
following single switches should you open?
A. Switch S3
B. Switch S2
C. Switch S5
D. Switch S4
8. A body that offers little resistance to the movement of free electrons from one point to another is a/an
A. capacitor.
B. conductor.
C. coulomb.
D. insulator.
9. If a bar of copper is brought near a magnet, the copper bar will be
A. unaffected by the magnet.
B. attracted by the magnet.
C. made into an induced magnet.
D. repelled by the magnet.
10. When an electric current flows through a long conductor, each free electron moves
A. from one end of the conductor to the other end.
B. with a speed of 300,000,000 m/s.
C. through a relatively short distance.
D. back and forth between the ends of the conductor.
11. A circuit contains two devices that are connected in parallel. If the resistance of one of these devices is
12 ohms and the resistance of the other de.
A good guide for personal or group/class revision. Suggestions and users comments will be appreciated, as this will help me to keep resources to a high standard. Please feedback if you have used any of the resources on sciencetutors.
Student ID 21973473 Exam 986056RR - Electricity and Elec.docxflorriezhamphrey3065
Student ID: 21973473
Exam: 986056RR - Electricity and Electronics
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.
Questions 1 to 25: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. An example of an atom that has no charge is one that has
A. 3 protons, 2 electrons, and 1 neutron.
B. 1 proton, 2 electrons, and 3 neutrons.
C. 3 protons, 1 electron, and 3 neutrons.
D. 2 protons, 2 electrons, and 1 neutron.
2. In a cathode ray tube, the number of electrons that reach the fluorescent screen is controlled by the
A. deflecting plate.
B. anode.
C. grid.
D. cathode.
3. To use your left hand to determine the direction of the voltage developed in a moving conductor in a
stationary magnetic field, you must point your
A. thumb in the direction of the magnetic flux.
B. forefinger in the direction of the lines of force.
C. thumb in the direction of the electromagnetic force.
D. forefinger in the direction of the motion.
4. The grid in a high-vacuum triode is usually kept negatively charged with respect to the cathode so that
the electrons may be
A. accelerated toward the anode.
B. accelerated toward the cathode.
C. attracted to the cathode instead of the grid.
D. attracted to the anode instead of the grid.
5. Which of the following does not affect the electrical resistance of a body?
A. Bodies directly surrounding the body
B. Material composing the body
C. Length of the body
D. Temperature of the body
6. If the resistance of an electric circuit is 12 ohms and the voltage in the circuit is 60 V, the current flowing
through the circuit is
A. 720 A.
B. 5 A.
C. 60 A.
D. 0.2 A.
The following question is based on the figure below.
7. If you want to stop the current flow through Device 3 in the circuit shown above, which one of the
following single switches should you open?
A. Switch S3
B. Switch S2
C. Switch S5
D. Switch S4
8. A body that offers little resistance to the movement of free electrons from one point to another is a/an
A. capacitor.
B. conductor.
C. coulomb.
D. insulator.
9. If a bar of copper is brought near a magnet, the copper bar will be
A. unaffected by the magnet.
B. attracted by the magnet.
C. made into an induced magnet.
D. repelled by the magnet.
10. When an electric current flows through a long conductor, each free electron moves
A. from one end of the conductor to the other end.
B. with a speed of 300,000,000 m/s.
C. through a relatively short distance.
D. back and forth between the ends of the conductor.
11. A circuit contains two devices that are connected in parallel. If the resistance of one of these devices is
12 ohms and the resistance of the other de.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
15. How can we classify diseases
The component of an electrical
according to produces
circuit that their origin?
the electrical current
A. cable.
B. motor.
C. generator.
D. switch.
16. How can we classify diseases
The component of an electrical
according to produces
circuit that their origin?
the electrical current
A. cable.
B. motor.
C. generator.
D. switch.
19. When an object is left with
more negative charges, we
say it is …
A. positively charged.
B. positively and negatively charged.
C. negatively charged.
D. neutral charged.
20. When an object is left with
more negative charges, we
say it is …
A. positively charged.
B. positively and negatively charged.
C. negatively charged.
D. neutral charged.
23. If the same poles of two
magnets are put close to each
other, the magnets will…
A. do nothing.
B. move together.
C. repel each other.
D. attract each other.
24. If the same poles of two
magnets are put close to each
other, the magnets will…
A. do nothing.
B. move together.
C. repel each other.
D. attract each other.
35. The component of an
What nutrients are
electrical circuit that controls
found inflow is the …
current vegetables?
A. generator.
B. switch.
C. motor.
D. cable.
36. The component of an
What nutrients are
electrical circuit that controls
found inflow is the …
current vegetables?
A. generator.
B. switch.
C. motor.
D. cable.
39. For electrical current to flow
What nutrients are
through an electrical
foundcircuit, the …
in vegetables?
A. circuit must be closed.
B. switch must be open.
C. generator must have one terminal.
D. motor must have one terminal.
40. For electrical current to flow
What nutrients are
through an electrical
foundcircuit, the …
in vegetables?
A. circuit must be closed.
B. switch must be open.
C. generator must have one terminal.
D. motor must have one terminal.
51. These produce electrical
current thanks to a turning
mechanism.
A. Batteries
B. Rechargeable batteries
C. Dynamos.
D. Photovoltaic cells or panels.
52. These produce electrical
current thanks to a turning
mechanism.
A. Batteries
B. Rechargeable batteries
C. Dynamos.
D. Photovoltaic cells or panels.
67. A complete path through which
electrical current flows through
very small components is a …
A. Electrical circuit.
B. electrical current.
C. electricity.
D. Electronic circuit.
68. A complete path through which
electrical current flows through
very small components is a …
A. Electrical circuit.
B. electrical current.
C. electricity.
D. Electronic circuit.
