Electric circuits

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Thiagarajar College of Preceptors (Aided)

This PPT prepared by student-Teacher from Thiagarajar College of Preceptors for Demo Class

LEVEL – 1
ELECTRIC CIRCUITS
BY
N.AFRIN
1122119BD008

ELECTRIC CURRENT : Flow of charges
ELECTRIC CIRCUIT : The path in which
the electrons flow

FOUR ELEMENTS OF SIMPLE CIRCUIT :
❑ A source of electricity ( BATTERY )
❑ A path or conductor through which electricity flows
( WIRE )
❑ An electrical resistor ( LAMP )
❑ To control the circuit ( SWITCH )

SIMPLE CIRCUIT :

SIMPLE CIRCUIT :
Series circuit
Parallel circuit

THANKYOU

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Basic of circuit Charge Charge is an electrical property of the atomic particles which matter consists. The unit of charge is the coulomb (C). The symbol for the charge is Q (or) q. ퟏ풄풐풖풍풐풎풃=ퟏ/(ퟏ.ퟔퟎퟐ×〖ퟏퟎ〗^(−ퟏퟗ) )=ퟔ.ퟐퟒ× 〖ퟏퟎ〗^ퟏퟖ 풆풍풆풄풕풓풐풏풔 Types of charge Positive charge Negative charge A single electron has a charge of -1.602x10-19 c. A single proton has a charge of +1.602x10-19 c. Current The flow of free electrons in a conductor is called electric current. The electric current is defined as the time rate of charge. The unit of current is the ampere (A). The symbol for the current is I (or) i. 1ampere=1coulomb/second Voltage The potential difference between two points in an electric circuit called voltage. The unit of voltage is volt. Voltage is represented by V (or) v. Power The rate at which work done by electrical energy (or) energy supplied per unit time is called the power. Power is the rate at which energy is expanded or the absorbing. The power denoted by either P or p. It is measured in watts (W). P = V x I Network Interconnection of two or more simple circuit elements is called an electric network. Circuit A network contains at least one closed path, it is called electrical circuit. Active Elements The sources of energy are called active element. They may be voltage source or current source. Example: Generators, Transistors, etc. Passive Elements These elements stores (in the form of electrostatic, electromagnetic energy) or dissipates energy (in the form of heat). Example: Resistance (R), Inductor (L), Capacitor (C). Resistance It is the property of a substance which opposes the flow of current through it. The resistance of element is denoted by the symbol “R”. It is measured in Ohms (Ω). Inductor It is the property of a substance which stores energy in the form of electromagnetic field. The inductance of element is denoted by the symbol “L”. It is measured in Henry (Η). Capacitor It is the property of a substance which stores energy in the form of electrostatic field. The capacitance of element is denoted by the symbol “C” It is measured in Farads (Ϝ).

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Electric circuits

1. LEVEL – 1 ELECTRIC CIRCUITS BY N.AFRIN 1122119BD008

2. ELECTRIC CURRENT : Flow of charges ELECTRIC CIRCUIT : The path in which the electrons flow

3. FOUR ELEMENTS OF SIMPLE CIRCUIT : ❑ A source of electricity ( BATTERY ) ❑ A path or conductor through which electricity flows ( WIRE ) ❑ An electrical resistor ( LAMP ) ❑ To control the circuit ( SWITCH )

4. SIMPLE CIRCUIT :

5. SIMPLE CIRCUIT : Series circuit Parallel circuit

6.