Question

Consider a circuit which contains a resistance free battery and a single resistance $R$ . If a second resistance is added in parallel with $R$ .

• A. The voltage across $R$ will decrease
• B. The current through $R$ will increase
• C. The total current drawn from the battery will increases
• D. The power dissipated in $R$ will decrease current drawn from battery will increase

Answer 1

The correct option is C The total current drawn from the battery will increases

From given question, A new resistance has been adding to the older resistance circuit. Because this connection is making in parallel so potential difference will be same in each resistors which is equal to initial value. Both resistance will draw equal current that is equal to $V/R$ and equal power that is equal to $V^2/R$ but total current from the battery will be sum of currents in individual resistance that is equal to $2V/R$. Hence The total current drawn from the battery will increases.

Hence Option C