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A heater is connected to a battery and draws a current of
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
A heater is connected to a
12
V
12\,\text{V}
12
V
battery and draws a current of
3
A
3\,\text{A}
3
A
. What is the resistance of the heater? (a)
36
Ω
36\,\Omega
36
Ω
(b)
4
Ω
4\,\Omega
4
Ω
(c)
0.25
Ω
0.25\,\Omega
0.25
Ω
(d)
15
Ω
15\,\Omega
15
Ω
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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