Question

When a 4V battery is connected across an unknown resistor there is a current of 100mA in the circuit. The value of the resistance of the resistor is :
(a) 4Ω
(b) 40Ω
(c) 400Ω
(d) 0.4Ω

Answer 1

Answer:

ii = 40 Ω. V=IR V = 4V I = 100 mA = 0.1 A Hence R = V/I = 4/0.1 Ω = 40 Ω.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

B part is correct

40 ohm !