Question

when an electric bulb is connected to a 220V mains a current of 0.5A flows through the bulb..find the resistance of the bulb​

Answer 1

Answer:

440 Ω

Explanation:

Given :-

V = 220 V

I = 0.5 A

To find :-

Resistance of the bulb.

Solution :-

We will be applying Ohm's law here, which states :

$\boxed{\bf V=IR}$

$\implies R=\dfrac{V}{I}$

Substituting values in the above formula,

$\implies R=\dfrac{220}{0.5}$

$\implies$R = 440 Ω

Hence, resistance of the bulb is 440 Ω.