MEDIUM
JEE Advanced
IMPORTANT
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If and represent, the physical quantities inductance, capacitance and resistance respectively, only the following combination does not have the dimensions of frequency
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Important Questions on Electromagnetic Induction
MEDIUM
JEE Advanced
IMPORTANT
A condenser of capacity is first charged and then discharged through a inductance. Neglecting the resistance of the coil, the frequency of the resulting vibrations will be
MEDIUM
JEE Advanced
IMPORTANT
The natural frequency of the circuit shown in the figure is
EASY
JEE Advanced
IMPORTANT
In an - circuit,
MEDIUM
JEE Advanced
IMPORTANT
The capacitor of an oscillatory circuit is enclosed in a container. When the container is evacuated, the frequency is . When the container is filled with a gas, the frequency changes by . The dielectric constant of the gas is
EASY
JEE Advanced
IMPORTANT
In a transformer, the coefficient of mutual inductance between the primary and the secondary coil is . When the current changes by in the primary, the induced emf in the secondary will be
MEDIUM
JEE Advanced
IMPORTANT
Which among the given options, is increased in a step-down transformer?
MEDIUM
JEE Advanced
IMPORTANT
The transformation ratio in the step-up transformer is
EASY
JEE Advanced
IMPORTANT
The ratio of secondary to the primary turns in a transformer is . If the power output be , then the input power neglecting all losses must be equal to
