Question

Give the derivation of resistance when connected in parallel support your answer with a circuit diagram

Answer 1

The above figure shows the circuit diagram for a parallel combination of three resistors with resistance R1,R2,R3 connected between the points C and D.

The Voltmeter measures the potential difference V between C and D and the ammeter measure the current in a given branch.

The circuit. I1,I2 and I3 be the current passing through the resistor of resistance R1,R2 and R3 respectively.

from equation...

I = I1 + I2 + I3 = V/R1 + V/R2 + V/R3

* I = V( 1/R1 + 1/R2 +1/R3 )

V = VOLTMETER

A = AMMETER

R = RESISTANCE

E = BATTERY

K = PLUGKEY

YOU WILL BETTER UNDERSTAND BY THE DIAGRAM...

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