EASY
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IMPORTANT
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A coil of resistance 50 Ω is connected across a 5.0 V battery. If the current in the coil is found to be 50 mA after the time t=0.1 s battery is connected, then the inductance of the coil is

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Important Questions on Electromagnetic Induction and Alternating Current

EASY
TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET 2019 (03-May Shift-2)>Q 8
A sinusoidal voltage with a frequency of 50 Hz is applied to a series LCR circuit with a resistance of 5 Ω, inductance of 20 mH and a capacitance of 500 μF. The magnitude of impedance of the circuit is close to
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TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET 2021 (04-Aug Shift-1)>Q 9
An alternating current is given by i=2sinωt+6cosωt. The R.M.S. current in amperes is,
EASY
TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET 2021 (04-Aug Shift-2)>Q 10
A resistance of 20 Ω is connected to an alternating current source of 110 V. If the frequency of the A.C. source is 50 Hz, then the time taken by the current to change from its maximum value to the R.M.S. value is
EASY
TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET - 5 August 2021 Shift 2>Q 11
A resistor of 20Ω and a capacitor are connected in series with an AC current source of 50 Hz. What should be the capacitance to produce a phase difference of 30° between the voltage and current?
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TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET 2020 (9-Sep Shift-1)>Q 12
A current of 6 A is flowing at 220 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 1100 V and 40% of power is lost, then the current in the secondary coil will be:
EASY
TS EAMCET
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 22 - Electromagnetic Induction and Alternating Current>TS EAMCET - 5 August 2021 Shift 1>Q 13
How much current is drawn by the primary coil of a transformer, which steps down 220 V to 55 V to operate a device with an impedance of 275Ω?