A) 50 Hz
B) 60 Hz
C) 80Hz
D) 100 Hz
Correct Answer: C
Solution :
Resistance of chock coil \[{{X}_{L}}=\frac{{{V}^{2}}}{P}=\frac{10\times 10}{20}=5\Omega \] \[{{X}_{L}}=2\pi \,fL\] \[5=2\times 3.14\times f\times 10\times {{10}^{-3}}\] \[f=80Hz\]You need to login to perform this action.
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