Question

On a bulb is written 220 Volt and 60 watt. Find out the resistance of the bulb and the value of the current flowing through it.

• A. 806.66 ohm 0.27 ampere
• B. 500 ohm 12 ampere
• C. 200 ohm 14 ampere
• D. 100 ohm 11 ampere

Answer 1

The correct option is A 806.66 ohm 0.27 ampere

$P=\frac{V^2}{R}=VI$

Hence, $R=\frac{V^2}{P}=\frac{220\times 220}{60}$

$⟹R=806.66\Omega$

$I=\frac{P}{V}=\frac{60}{220}$

$⟹I=0.27A$

Answer-(A)