railway RRB JE (CBT I + CBT II) Mock Test 2024 Network Theory Sinusoidal Steady State Analysis

In an a.c. circuit, \(v = 50\sin \left( {\omega t + 60^\circ } \right),\;i = 10{\rm{cos}}\left( {\omega t} \right)\) then the power factor of a.c. circuit will be:

1
0.5 lag
2
0.5 lead
3
0.866 lag
4
0.866 lead
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