The P.D between A and B will be zero when the resistance R is Options: A . &nbsp4.5 ohm B . &nbsp12 ohm C . &nbsp9 ohm D . &nbsp6 ohm

Answer: Option A : A From the circuit 15 4 = R + 3 2 15 = 2 R + 6 R = 9 2 = 4.5 Ω

The P.D between A and B will be zero when the resistance R is

Question

The P.D between A and B will be zero when the resistance R is

Options:

A . 4.5 ohm

B . 12 ohm

C . 9 ohm

D . 6 ohm

Answer: Option A
:
A
From the circuit

\frac{15}{4} = \frac{R + 3}{2} 15 = 2 R + 6 R = \frac{9}{2} = 4.5 Ω

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