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NEET 2016
Exam
NEET
Year
2016
Subject
Physics
Chapter
Current Electricity

NEET 2016 · Physics · Current Electricity

The potential difference ( V _ A - V _ B ) between the points A and...

The potential difference (VA−VB)\left({V}_{A} - {V}_{B}\right) between the points AandBA and B in the given figure is
The potential difference ( V _ A - V _ B ) between the points A and B in the given figure is

Options

  1. A−3V- 3V
  2. B+3V+ 3V
  3. C+6V+ 6V
  4. D+9V+ 9V

Correct answer

D. +9V+ 9V

Step-by-step solution

Complicated circuits with multiple potential points and batteries can be easily solved using Kirchhoff's laws.

Consider applying Kirchhoff's voltage law (KVL) to the given circuit.

The potential difference ( V _ A - V _ B ) between the points A and B in the given figure is

VA−VB=(2×2)+3+(2×1){V}_{A} - {V}_{B} = \left(2 \times 2\right) + 3 + \left(2 \times 1\right)

=4+3+2= 4 + 3 + 2

=9V= 9V.

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