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Physics
Physics
Problem
Which formula correctly gives the heat
H
H
H
(in joule) produced when a current
I
I
I
flows through a resistor of resistance
R
R
R
for a time
t
t
t
? a)
H
=
1
2
I
2
R
t
H = \dfrac{1}{2} I^{2} R t
H
=
2
1
I
2
R
t
b)
H
=
I
2
R
t
H = I^{2} R t
H
=
I
2
R
t
c)
H
=
0.24
I
2
R
t
H = 0.24\, I^{2} R t
H
=
0.24
I
2
R
t
d)
H
=
V
2
t
2
R
H = \dfrac{V^{2} t}{2 R}
H
=
2
R
V
2
t
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