A) \[{{10}^{4}}W\]
B) \[10W\]
C) \[2.5\text{ }W\]
D) \[5W\]
Correct Answer: C
Solution :
Voltage amplitude\[{{V}_{0}}=100\,V,\]current amplitude \[{{I}_{0}}=100\,mA=100\times {{10}^{-3}}A\] Phase difference \[\phi =\frac{\pi }{3}=60{}^\circ \] Power dissipated \[p=\frac{{{V}_{0}}{{I}_{0}}}{2}\cos \phi \] \[=\frac{100\times 100\times {{10}^{-3}}}{2}\times \cos 60{}^\circ \] \[=2.5\,W\]You need to login to perform this action.
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