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Assertion: In the phenomenon of mutual induction, self-induction of each of the coils persists. Reason: Self-induction aries when strength of current in same coil changes. In mutual induction, current is changing in both the individual

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Assertion: If the inner solenoid is much shorter than (and placed well inside) the outer solenoid, then the flux linkage `N_1phi_1` can still be calculated. Reason: The inner solenoid is effectively immersed in a uniform magnetic field due to the outer

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Assertion: Mutual inductance of two coils does not depends on the distance between the coils and their orientation. Reason: It does not depend on the magnetic material filled between the

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxOn the basis of Faraday’s law, current in the coil is

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

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxThe flux linked with a circuit is given by `phi=t^3+3t-7`. The graph between time (X-axis) and induced emf (Y-axis) will be

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

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxWire loop is rotated in a magnetic field. The frequency of change of direction of the induced emf

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

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxThe instantaneous magnetic flux linked with a coil is given by `phi= (5t^3 -100t + 300) Wb`. The emf induced in the coil at time `t = 2 s`

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

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxA copper disc of radius 0.1 m is rotated about its centre with 20 rev/s in a uniform magnetic field of 0.1 T with its plane perpendicular to the field. The emf induced

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

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.The change in magnetic

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

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.Which of the following statement(s) is/are correct? I. The steady current in the coil `C_2` produces a steady magnetic field. II. If coil `C_2` is moved towards the coil `C_1`, the galvanometer

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

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.What will be the direction of deflection of galvanometer, when `C_2` is moved

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

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.For duration of deflection in G, i.e. current flow in coil `C_1` which of the following statement is

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

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.When the coil `C_2` is held fixed and `C_1` is moved ,

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

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. Eddy currents in a metal core of transformer can be

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

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. The plane of the laminations must be arranged parallel to the magnetic field, so that

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

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. induction furnace is used to

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

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. induction furnace can be utilised to

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

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. When a high frequency alternating current is passed through a coil which surrounds the metal to be melted,

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

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Self-Induction Self-induction is the property of a coil by virtue of which the coil opposes any change in the strength of current flowing through it by inducing an emf in itself. This induced emf is also called back emf. When the current in a coil is switched ON, then the self induction opposes the growth of the current and when it is switch OFF, then the self-induction opposes the decay of the current.The dimensions of self-inductance L

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

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Self-Induction Self-induction is the property of a coil by virtue of which the coil opposes any change in the strength of current flowing through it by inducing an emf in itself. This induced emf is also called back emf. When the current in a coil is switched ON, then the self induction opposes the growth of the current and when it is switch OFF, then the self-induction opposes the decay of the current.The inductor has inductance `0.54 H` and carries a current that is decreasing at a uniform rate `(di)/(dt)=- 0.03` A/s, then dt the induced emf will

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

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