EASY
JEE Advanced
IMPORTANT
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A coil of inductance 300 mH and resistance 2 Ω is connected to a source of voltage 2 V. The current reaches half of its steady state value in

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Important Questions on Electromagnetic Induction

EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 62
An inductor of 2 H and a resistance of 10 Ω are connected in series with a battery of 5 V. The initial rate of change in current is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 63
In an inductor of inductance L=100 mH, a current of I=10 A is flowing. The energy stored in the inductor is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 64
During current growth in an L-R circuit the time constant is the time in which the magnitude of current becomes
HARD
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 65
An L-R circuit with a battery is connected at t=0. Which of the following quantities is not zero just after the connection?
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 66

In the circuit shown in the figure, what is the value of I1 just after pressing the key K?

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EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 67
The time constant of an inductance coil is 2.0×10-3 s. When a 90 Ω resistance is joined in series, the time constant becomes 0.5×10-3 s. The inductance and resistance of the coil are
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 68
An emf of 20 V is applied in a circuit coil containing 5 H inductance and 5 Ω resistance. The ratio of the currents at time t=∞ and t=ln2 is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 5 - Electromagnetic Induction>Objective Problems [ Level 1 ]>Q 69

In the circuit shown, what is the energy stored in the coil at steady state?

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