This document appears to be a practice test for a Technology and Livelihood Education course. It contains 20 multiple choice identification questions testing electrical concepts like conductors, circuits, current, voltage, resistance, and appliances. It also contains 3 math problems asking students to calculate current, electromotive force, and heat resistance based on given voltage, current, and resistance values in various circuits. The test is assessing students' understanding of basic electrical principles and their ability to apply Ohm's Law to solve circuit problems.

1. Republic of the Philippines
Department of Education
Bugarin National High School
Pililla, Rizal
FOURTH PERIODICAL TEST IN TECHNOLOGY AND LIVELIHOOD EDUCATION I
Name: _________________________ Score: ______________________
Year & Section: _________________ Date: _______________________
I. Identification: Read and identify the following items carefully. Write the letter of the correct
Answer that best corresponds to the given statement.
_____1. This is one of the best conductors and commonly used in electrical work
a. aluminum b. copper c. silver
_____2. What will happen if a battery is connected to a circuit having no load?
a. no electrical work will be accepted
b. source will produce voltage
c. the current will flow
_____3. Which current periodically alternates its direction of flow?
a. alternating current b. direct current c. none of these
_____4. In dealing with electrical technology, it is dangerous to have______
a. complex circuit b. parallel circuit c. series circuit
_____5. The electricaltool is used to fasten and loosen screws.
a. long pliers b. side cutting pliers c. screw driver
_____6. In this circuit, the current flows in one direction
a. complex circuit b. parallel circuit c. series circuit
_____7. This electrical tool is used for cutting wires
a. long pliers b. side cutting pliers c. screw driver
_____8. It is part of a circuit that open and closes the circuit
a. load b. means of control c. path
_____9. Part of the circuit that consumes current.
a. load b. means of control c. path
_____10. It is an electrical force that moves the electrons or charge to produce current
a. current b. resistance c. voltage
_____11. Its letter symbol is (I) and its basic unit is ampere
a. current b. resistance c. voltage
_____12. An instrument used to measure resistance of a circuit
a. ammeter b. ohmmeter c. voltmeter
_____13. It is the capacity to do work
a. energy b. power c. source
_____14. It is the unit measurement for power
a. ampere b. ohms c. source
_____15. A current which reverses its direction at regular interval
a. AC b. DC c. HC
16. Electric fan is an example of appliances that used electric motor can provide_______
a. heat b. light c. motion d. sound
17. An appliances that is fastened or otherwise secured at specific location.
a. stationary appliance b. fixed appliance
c. portable appliance d. appliances
18. Is a device that converts light energy directly to electrical energy.
a. wet cell b. solar cell c. dendro d. geothermal process
19. Types of batteries that which is disposable after the store energy is exhausted.
a. cell b. wet cell c. secondary battery d. primary battery
20. Are materials through which electron can move easily from atom to atom.
a. insulator b. plastic c. pliers d. conductors
III. Problem Solving: Show your solution( 3 points each)
1. How much current will pass through a conductor where resistance is 50 ohms if the
applied voltage is 160 volts?
2. How much electromotive force is needed to force a current of 15 amperes through a
resistance of 30 ohms?
3. What is the heat resistance of 220 volts which uses a current of 30
Amperes?