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Questions  >>  CBSE XII  >>  Physics  >>  Alternating current
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How does the sign of the phase angle ϕ , big which the supply voltage leads the current in an LCR series circuit , change as the supply frequency is gradually increased from very low to very high values ?

(i)whenγislowthenϕispositive(ii)α=αr,thenϕiszero.(iii)whenγ>γr,thenϕisnegative(i)whenγislowthenϕisnegative(ii)α=αr,thenϕiszero.(iii)whenγ>γr,thenϕispositive(i)whenγislowϕiszero(ii)α=αr,ϕiszero.(iii)whenγ>γr,thenϕisverysmall(i)whenγislowthenϕisverysmall(ii)α=αr,thenϕiszero.(iii)whenγ>γr,thenϕis

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