A wire carries a current of 0.10 µA. The potential difference across the wire is 10 mV.How much energy is dissipated by the wire in a time of 10 s?A 1.0 pJ B 10 pJ C 1.0 nJ D 10 nJ
Question
A wire carries a current of 0.10 µA. The potential difference across the wire is 10 mV.How much energy is dissipated by the wire in a time of 10 s?A 1.0 pJ B 10 pJ C 1.0 nJ D 10 nJ
Solution
The energy dissipated by a wire can be calculated using the formula:
E = V * I * t
where: E is the energy dissipated, V is the potential difference, I is the current, and t is the time.
Given: V = 10 mV = 10 * 10^-3 V, I = 0.10 µA = 0.10 * 10^-6 A, and t = 10 s,
we can substitute these values into the formula:
E = (10 * 10^-3 V) * (0.10 * 10^-6 A) * (10 s) = 10 * 10^-9 J = 10 nJ.
So, the energy dissipated by the wire in a time of 10 s is 10 nJ. The correct answer is D.
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