A series L.R circuit connected with an ac source \(E=(25\sin 1000t)V\) has a power factor of\(\frac{1}{\sqrt{2}}\). If the source of emf is changed to

E =\((20\sin 2000\mathrm{t})\mathrm{V}\), the new power factor of the circuit will be :

Question

A series L.R circuit connected with an ac source \(E=(25\sin 1000t)V\) has a power factor of\(\frac{1}{\sqrt{2}}\). If the source of emf is changed to

E =\((20\sin 2000\mathrm{t})\mathrm{V}\), the new power factor of the circuit will be :

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A series L.R circuit connected with an ac source \(E=(25\sin 1000t)V\) has a power factor of\(\frac{1}{\sqrt{2}}\). If t…

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