Question

In the given circuit the internal resistance of the 18 V cell is negligible . If $R_1=400\Omega ,$$R_3=100\Omega ,$and $R_4=500\Omega ,$and the reading of an ideal voltmeter across $R_4$ is 5 V, then the value of $R_2$ will be :

• A. 300 $\Omega$
• B. 230 $\Omega$
• C. 500 $\Omega$
• D. 450 $\Omega$

Answer 1

The correct option is A 300 $\Omega$

The correct option should be A