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A small motor takes a current of when connected to a certain resistor
PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity
Problem
A small motor takes a current of
250
mA
250\,\text{mA}
250
mA
when connected to a certain resistor. If the resistance of the motor is
40
Ω
40\,\Omega
40
Ω
, what potential difference is applied across it? (a)
2.5
V
2.5\,\text{V}
2.5
V
(b)
1.0
V
1.0\,\text{V}
1.0
V
(c)
10
V
10\,\text{V}
10
V
(d)
100
V
100\,\text{V}
100
V
Related theory
Ohm's Law
Ohm's Law (Macroscopic)
Electricity
Electric Circuits
Ohm's law, V-I graphs and ohmic/non-ohmic conductors
Current Electricity
Ohm's law and V-I graphs
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