Chapter 26 – EMI
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Two coils of self-inductances 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is:
19
Aug
Two coils of self-inductances 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is: Two coils of self-inductances 2 mH and 8 mH are placed so close together that the effective flux in one coil [...]
A conducting square frame of side ′a′ and a long straight wire carrying current I are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity ′V′. The emf induced in the frame will be proportional to
19
Aug
A conducting square frame of side ′a′ and a long straight wire carrying current I are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity ′V′. The emf induced in the frame will be proportional to A wire loop is rotated in a magnetic [...]
A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced emf is
19
Aug
A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced emf is A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced emf is August 19, 2020 Category: Chapter 26 - EMI , NEET Last 32 Years Solved 1988 [...]
A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate dBdt. Loop 1 of radius R r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in figure. Then, the emf generated is
19
Aug
A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate dBdt. Loop 1 of radius R r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in figure. Then, the emf generated is An [...]
A rectangular coil of length 0.12m and width 0.1m having 50 turns of wire is suspended vertically in uniform magnetic field of strength 0.2 Wb/m^2. The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30 degree with the direction of the field, the torque required to keep the coil in stable equilibrium will be
19
Aug
A rectangular coil of length 0.12m and width 0.1m having 50 turns of wire is suspended vertically in uniform magnetic field of strength 0.2 Wb/m^2. The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30 degree with the direction of the field, the torque [...]
An electron moves on a straight line path XY as shown. The abcd is a adjacent to the path of electron. What will be the direction of current, if any, induced in the coil?
19
Aug
An electron moves on a straight line path XY as shown. The abcd is a adjacent to the path of electron. What will be the direction of current, if any, induced in the coil? An electron moves on a straight line path XY as shown. The abcd is a adjacent to the path of electron. [...]
The current l in the inductance is varying with time according to the plot shown in the figure.Which one of the following is the correct variation of voltage with time in the coil?
19
Aug
The current l in the inductance is varying with time according to the plot shown in the figure.Which one of the following is the correct variation of voltage with time in the coil? The current l in the inductance is varying with time according to the plot shown in the figure.Which one of the following [...]
The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be
19
Aug
The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be August 19, 2020 Category: Chapter 25 - Magnetic Induction [...]
A conducting circular loop is placed in a uniform magnetic field, B=0.025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1mms^-1. The induced emf when the radius is 2cm is
19
Aug
A conducting circular loop is placed in a uniform magnetic field, B=0.025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1mms^-1. The induced emf when the radius is 2cm is A conducting circular loop is placed in a uniform magnetic field [...]
A rectangular, a square , a circular and an elliptical loop, all in the xy-plane, are moving out of a uniform magnetic field with a constant velocity v→=viˆ.The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops , out of the field region, will not remain constant for
19
Aug
A rectangular, a square , a circular and an elliptical loop, all in the xy-plane, are moving out of a uniform magnetic field with a constant velocity v→=viˆ.The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops , out of the field region, will not remain [...]
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a circular and an elliptical loop ,
A rectangular ,
a square ,
all in the xy-plane ,
are moving out of a uniform magnetic field with a constant velocity v→=viˆ.The magnetic field is directed along the negative z-axis direction. The induced emf ,
during the passage of these loops ,
out of the field region ,
will not remain constant for ,