Figure represents a part of closed circuit. The potential difference $(V_{A} - V_{B})$ is:

10 V

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13 V

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15 V

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18 V

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Solution

The correct option is D $18 V$

Potential difference across resistor is given as $V = I R$ .

Potental difference can be calculated as:

$V_{A} + 3 - 3 (1) - 3 (6) = V_{B}$

$V_{A} - V_{B} = 18 V$

Tip: When you move in the direction of current, potential across resistor decreases and when you move from negative terminal to positive terminal of the battery, potential increases.

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Resistance and Resistors

Standard XII Physics

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Figure represents a part of closed circuit. The potential difference (VA−VB) is:

Figure represents a part of closed circuit. The potential difference $(V_{A} - V_{B})$ is: