Question

When a 12volt battery is connected across an unknown resistor ,there is a current of 2.5 mA in the circuit .Find the value of the resistance of the resistor

Answer 1

Explanation:

given that - V = 12 volt

I = 2.5 mA = 2.5 x 10 ^-3 A

R = ?

by ohms law , V = I X R

R = V / I

R = 12 / 2.5 x 10 ^-3

R = 4.8 x 10 ^3

R = 4800 ohm

Answer 2

Answer:

R=V/I

R=12/2.5

=4.8 ohm