Question

The reading of voltmeter is

• A. 50 V
• B. 60 V
• C. 40 V
• D. 80 V

Answer 1

Answer: (C)

$R _{ eq }=200+\frac{300 \times 600}{300+600}+100 $
$=500 \,\Omega$
$I =\frac{100}{500}=\frac{1}{5} $ amp
$I _{600}=\frac{\frac{1}{600}}{\frac{1}{300}+\frac{1}{600}} \times \frac{1}{5}$
$=\frac{1}{15}$ amp
Reading of volt meter
$= I R _{600}=\frac{1}{15} \times 600$
$=40 \,V$