A resistor is connected in series with a parallel combination of and resistors across…

MATHEMATICS · Single correct · ISC · Physics · Current Electricity · Electrical energy and power

Problem

5\,\Omega

resistor is connected in series with a parallel combination of

3\,\Omega

and

6\,\Omega

resistors across an

18\,\text{V}

battery. A

9\,\Omega

resistor is then added in parallel with the

3\,\Omega

and

6\,\Omega

branch while the battery voltage remains the same. Approximately what percentage change occurs in the total power supplied by the battery? (a)

12\%

(b)

6\%

(c)

25\%

(d)

8\%