Alight bulb has a resistance of 360 . what is the current in the bulb when it has a potential difference of 120 v across it?

a 0.33 a
b 3 a
c 480 a
d 43,200 a

The correct answer is option A. 0.33A.

According to the Ohm's Law, The current across the two points is directly propotional to the voltage and the equation is given below.

V ∝ i      (v is voltage or potential difference and i is current)

V = iR    ( Resistance)

Resistance is a constant, which is independent of the value of the current.

Given,

R = 360

V= 120 V

Putting value of R and V in V =iR

120 = 360 i

Hence, the current in the bulb will be 0.33 A (ampere).

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