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Physics
Physics
Problem
Which one of the following expressions gives the electrical power dissipated in a resistor solely in terms of the current
I
I
I
through it and its resistance
R
R
R
? a)
1
2
I
2
R
\dfrac{1}{2}\,I^{2} R
2
1
I
2
R
b)
2
I
2
R
2 I^{2} R
2
I
2
R
c)
I
2
R
I^{2} R
I
2
R
d)
2
I
2
R
\sqrt{2}\, I^{2} R
2
I
2
R
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