When a 40 V battery is connected across an unknown resistor there is a current of 100 mA in the - Science - Electricity

Question

When a 40 V battery is connected across an unknown resistor there
is a current of 100 mA in the circuit Find the value of the
resistance of the resister:
(A) 5000 Ω (B) 800 Ω (C) 0 8 Ω (D) none of these

Deepak Kumar · Accepted Answer

Dear Student ,V = 40V  I = 100 mA = 100 x 10-3  V = IR  R=VI  R=40100x10-3   = 
4x102=400ΩSo (d) option is correctRegards

When a 40 V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. Find the value of the resistance of the resister: (A) 5000 Ω (B) 800 Ω (C) 0.8 Ω (D) none of these

When a 40 V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. Find the value of the resistance of the resister:
(A) 5000 Ω (B) 800 Ω (C) 0.8 Ω (D) none of these