Question

In the figure the current $i$ in the circuit will be:

• A. $\frac{1}{45}$ ampere
• B. $\frac{1}{15}$ ampere
• C. $\frac{1}{10}$ ampere
• D. $\frac{1}{5}$ ampere

Answer 1

The correct option is C $\frac{1}{10}$ ampere

Given : $V=2$ volts

Equivalent resistance of the circuit $R_{eq}=(30+30)\parallel 30=60\parallel 30$ $\Omega$

$\therefore$ $R_{eq}=\frac{30\times 60}{30+60}=20\Omega$

Current $i=\frac{V}{R_{eq}}=\frac{2}{20}=0.1$ A