Question

a bulb of 60w is connected across a source of 220v. find the resistance of the bulb

Answer 1

Explanation:-

P = 60 w

V = 220 v

To find :-

Resistance of the bulb.

Solution:-

Resistance:- It is the property of a material to resist the flow of electric current through itself is called resistance.

• There is a realation between resistance, power and voltage.

$\boxed{P = \dfrac{V^2}{R}}$

• Put the given values,

→$60 = \dfrac{(220)^2}{R}$

→$R = \dfrac{48,400}{60}$

→$R = 806.66 \Omega$

hence,

The value of resistance of bulb is $806.66 \Omega$