Three wires S, T and U have the following readings when connected across the same…

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

Three wires S, T and U have the following readings when connected across the same source: S:

6\,\text{V}

1.5\,\text{A}

10\,\text{V}

2.0\,\text{A}

9\,\text{V}

1.5\,\text{A}

A fourth wire W is connected to

12\,\text{V}

from the same source. It is known that the resistance of W lies between that of S and T. Which range must the current through W satisfy? (a)

I < 2.4\,\text{A}

(b)

3.0\,\text{A} < I < 4.0\,\text{A}

(c)

2.4\,\text{A} < I < 3.0\,\text{A}

(d)

2.4\,\text{A} \le I \le 3.0\,\text{A}