Question

Q. If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?
answer choices
5 V
12 V
0.2 V
20 V

Answer 1

Answer:

The correct answer is 20 V (option - D)

Explanation:

Please note the reference picture.

In the circuit the voltage across the bulb will be V.

And from Ohms Law, we know that -

V = I x R

Where I = current through the bulb

and R is the resistance of the bulb.

Therefore, according to the given data in the question

V = 2 x 10

   = 20 V.