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In the circuit shown in fig. potential diff. across L, C and and R are given. Find the e.m.f. of the source and calculate power factor of the circuit. |
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Answer» Here, `V_(L) = 100 V, V_(R ) = 80 V`, `V_(C ) = 40 V, V = ?` `V = sqrt(V_(R )^(2) + (V_(L) - V_(C ))^(2)) = sqrt(80^(2) + (100 - 40)^(2))` `=100 V` Power factor, `cos phi = (V_(R ))/(V) = (80)/(100) = 0.8` |
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