Question

In the figure the potential at A is _____ when the potential at B is zero.

2V

B

2A V=0

A

VA

5​

Answer 1

The potential at A is 4 Volt.

Explanation:

• A negative voltage is obtained while moving from the positive to the negative side of a battery.
• Therefore we can write:
• Va - 2 × 1 - 2 = Vb
• Va - 4 = Vb
• Va = Vb + 4
• Now, put the value at point Vb = 0 which is gievn.
• Va = 4 Volt
• Therefore, Potential at A is 4 Volt