Consider the three circuits shown above. All the resistors and all the batteries

Question

Consider the three circuits shown above. All the resistors and all the batteries are identical.

Consider the three circuits shown above. All the resistors and all the batteries are identical. The voltage across a single resistor in circuit C is twice the voltage across a single resistor in circuit B. The total power dissipated in circuit C is twice the total power dissipated in circuit B. The power dissipated in circuit A is twice the power dissipated in circuit B. The current through a resistor is the same in circuits A and B. The current through a resistor is the same in circuits A and C.

Explanation / Answer

1) True

Voltage across R(Vr), in C: Vr=V; in B Vr= V/2

2) False

P= V2/R ;

in C; total power= (V2/R) x 2 =2v2/R

in B: total power=2 x (V/2)2 /R = v2/2R

3) True

in A,power disspiation= V2/R

4) False

current in A= V/R

current in B=V/2R

5) True

Current in C, V/R

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