Electromagnetic induction Increasing the field or increasing the current will decrease the force on the conductor. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns. No Yes No Yes 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 3 mH 24 mH 12 mH 48 mH 3 mH 24 mH 12 mH 48 mH ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it Lies perpendicular to the magnetic flux Cuts magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field Lies perpendicular to the magnetic flux Cuts magnetic flux Moves parallel to the direction of the magnetic field Lies in a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is 5000 ohms 500 ohms 1000 ohms 100 ohms 5000 ohms 500 ohms 1000 ohms 100 ohms ANSWER DOWNLOAD EXAMIANS APP
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 12 mH 6 mH 18 mH 36 mH 12 mH 6 mH 18 mH 36 mH ANSWER DOWNLOAD EXAMIANS APP
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