An resistor and a resistor are connected in series to a supply

MATHEMATICS · Single correct · A Level · Mathematics · Quantities and units in mechanics · Quantities and units in mechanics

Problem

8\,\Omega

resistor and a

12\,\Omega

resistor are connected in series to a

24\,\text{V}

supply. The supply voltage is then increased to

36\,\text{V}

with the resistors unchanged. By what percentage does the total power consumed in the circuit increase? (a)

150\%

(b)

50\%

(c)

125\%

(d)

225\%