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In the LCR circuit shown in Fig , the ac driving voltage is `v = V_m sin ωt`. Describe subsequent motion of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A coil having area `2m^2` is placed in a magnetic field which changes from 1 wb /`m^2` to 4 wb/`m^2` in an interval of 2 second. The emf induced in the coil of single turn

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two different loops are concentric & lie in the same plane. The current in outer loop is clockwise & increasing with time. The induced current in the inner loop then,

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A ring of radius r is rotating about its diameter with angular velocity `omega` in a perpendicular magnetic field `vecB` It has 20turns.The emf induced

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A magnetic field `2xx 10^(-2) T` acts at right angles to a coil of area `200 cm^2` with 25 turns. The average emf induced in the coil is 0.1 v when it removes from the field in time t. The value of t

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The magnetic flux linked with a coil, in webers, is given by the equation `phi=4t^2- 3t+ 7` . Then the magnitude of induced emf at 2 sec will be

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A solenoid of 1.5 m long with inner diamter of 4 cm has three layers of windings of 1000 turns each & carries a current of 2 A. The magnetic flux through a cross section of the solenoid is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A coil has an area of 0.05 m2 & it has 800 turns. It is placed perpendicularly in a magnetic field of strength , `4xx10^(–5) Wb/m^(-2)`. It is rotated through `90^o` in 0.1 sec. The average emf induced in the coil

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A bar magnet is moving along the common axis of two coils A &B towards A. current is induced

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A coil having n turns & resistance `ROmega` is connected with a galvanometer of resistance `4ROmega`. This combination is moved from a magnetic field W1 Wb to W2 Wb in t second. The induced current in the circut

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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When a train travels with a speed `360 km h^(-1)` along the track separated by 1 meter. The vertical component of earth's magnetic field is `0.1xx 10^(-4) T` .What is the value of induced emf between the rails

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An electron moves along the line AB,which lies in the same plane as a circular loop of conducting wires as shown in figure. What will be the direction of current induced if any, in the loop

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A circular loop of radius R carrying current I lies in X-Y plane with its centre at origin. The total magnetic flux through x-y plane

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Consider the situation shown in the figure. The wireAB is sliding on the fixed rails with a constant velocity `vecv` . If the wire AB replaced by semi circular wire the magnitude of the induced current

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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When the number of turns in a coil is make four time without any change in length of the coil, its self inductance

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A metal road moves at a constant velocity in a direction perpendicular to its length & a constant uniform magnetic field too. Select the correct statement (s) from the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two co-axial solenoids are made by a pipe of cross sectional area `10 cm^2` and length 20 cm If one of the solenoid has 300 turns and the other 400 turns, their mutual inductance

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The self inductance of a straight conductor

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Two coils of self inductances 2 mH & 8 mH are placed so close togather that the effective flux in one coil is completely half with the other.The mutual inductance between these coils

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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