Electromagnetic induction The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is 18 mH 12 mH 36 mH 6 mH 18 mH 12 mH 36 mH 6 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The law that the induced e.m.f. and current always oppose the cause producing them is due to Faraday Coulomb Lenz Newton Faraday Coulomb Lenz Newton ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction Which of the following is not a unit of inductance? Hennry Coulomb/volt ampere All of the listed here Volt second per ampere Hennry Coulomb/volt ampere All of the listed here Volt second per ampere ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Produce current opposite to the increasing current Aid the applied voltage Aid the increasing current Tend to decrease the amount of current Produce current opposite to the increasing current Aid the applied voltage Aid the increasing current Tend to decrease the amount of current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be 24 mH 3 mH 12 mH 48 mH 24 mH 3 mH 12 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is 350 mH 3500 mH 250 mH None of the listed here 350 mH 3500 mH 250 mH None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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