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What potential difference must be applied across a resistor to obtain a current of ?
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
What potential difference must be applied across a
47
Ω
47\,\Omega
47
Ω
resistor to obtain a current of
0.20
A
0.20\,\text{A}
0.20
A
? (a)
10
V
10\,\text{V}
10
V
(b)
4.7
V
4.7\,\text{V}
4.7
V
(c)
9.4
V
9.4\,\text{V}
9.4
V
(d)
0.94
V
0.94\,\text{V}
0.94
V
Related theory
Ohm's Law
Ohm's Law (Macroscopic)
Ohm's law, V-I graphs and ohmic/non-ohmic conductors
Current Electricity
Ohm's law and V-I graphs
Electricity
Electric Circuits
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