Question

When a 4 V battery is connected across an unknown resistor there is a current
of 100 mA in the circuit. The value of the resistance of the resistor is:
(a) 422
(b) 40 22
(c) 4000
(d) 0.422​

Answer 1

Explanation:

the formula is v=i×r

4=100×r

r=4/100

0.04