Question

a lamp draws a current of 0.5 A when it is connected to a 60 V source. what is the resistance of the lamp

Answer 1

Answer:

120ohm

Explanation:

given : I = 0.5 A

V=60v

by ohms law,

R=V/I

=60/0.5

= 120ohm

Answer 2

Given,

Total current drawn by a lamp = 0.5 A

Total voltage supply = 60 V

To find,

The resistance of the lamp.

Solution,

We can simply solve this numerical problem by using the following process:

As per ohms law,

" For a voltage V across the conductor, current I flowing through the conductor and resistance R provided by the conductor to the flow of current,

V = RI "

=> R = V/I

Now, according to the question;

The resistance of the lamp

= Total voltage supply / Total current drawn by the lamp

= 60 V / 0.5 A

= 120 ohms

Hence, the total resistance of the lamp is equal to 120 ohms.