Question

If a bulb of 60 W is connected across a source of 220 V, the current drawn by it is:

• A. 0.3 A
• B. 0.27 A
• C. 3.67 A
• D. 0.5 A

Answer 1

The correct option is B 0.27 A

The electric power in watts associated with a complete electric circuit or a circuit component represents the rate at which energy is converted from the electrical energy of the moving charges to some other form, e.g., heat, mechanical energy, or energy stored in electric fields or magnetic fields. The power is given by the product of applied voltage and the electric current. That is, P=VI. The power of the bulb is given as 60 W and the voltage is 220 V.
The current drawn in calculated as follows.
$I=\frac{P}{V}=\frac{60W}{220V}=0.2727A$
Hence, the current drawn by the bulb is 0.2727 A.