First slide

Ohm's law

Question

A, B and C are voltmeters of resistance R, 1.5R and 3 R respectively as shown in the figure. When some potential difference is applied between X and Y, the voltmeter readings are $V_{A}, V_{B} and V_{C}$ respectively. Then

Moderate

A

$V_{A} = V_{B} \neq V_{C}$
B

$V_{A} \neq V_{B} \neq V_{C}$
C

$V_{A} = V_{B} = V_{C}$
D

$V_{A} \neq V_{B} = V_{C}$

Solution

The current flowing in the different branches of circuit is indicated in the figure.
$\begin{array}{l} V_{A} = I R \\ V_{B} = \frac{2 I}{3} \times \frac{3}{2} R = I R \\ V_{C} = \frac{I}{3} \times 3 R = I R \\ Thus, V_{A} = V_{B} = V_{C} \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App