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A line charge with linear charge density λ is wound around an insulating disc of mass M and radius R, which is then suspended horizontally as shown in Fig. 3.90, so that it is free to rotate. In the central region, of radius a, there is a uniform magnetic field B0, pointing up. Now the magnetic field is switched off, which causes the disc to rotate. Find the angular speed with which the disc starts rotating.
07
Sep
A line charge with linear charge density λ is wound around an insulating disc of mass M and radius R, which is then suspended horizontally as shown in Fig. 3.90, so that it is free to rotate. In the central region, of radius a, there is a uniform magnetic field B0, pointing up. Now the [...]
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A line charge with linear charge density λ is wound around an insulating disc of mass M and radius R ,
of radius a ,
pointing up. Now the magnetic field is switched off ,
so that it is free to rotate. In the central region ,
there is a uniform magnetic field B0 ,
which causes the disc to rotate. Find the angular speed with which the disc starts rotating. ,
which is then suspended horizontally as shown in Fig. 3.90 ,
A non-conducting ring of mass m and radius R has a charge Q uniformly distributed over its circumference. The ring is placed on a rough horizontal surface such that plane of the ring is parallel to the surface. A vertical magnetic field B=B0t2 tesla is switched on. After 2 a from switching on the magnetic field the ring is just about to rotate about vertical axis through its centre. (a) Find friction coefficient μ between the ring and the surface. (b) If magnetic field is switched off after 4s, then find the angle rotated by the ring before coming to stop after switching off the magnetic field.
07
Sep
A non-conducting ring of mass m and radius R has a charge Q uniformly distributed over its circumference. The ring is placed on a rough horizontal surface such that plane of the ring is parallel to the surface. A vertical magnetic field B=B0t2 tesla is switched on. After 2 a from switching on the magnetic [...]
A thin non-conducting ring of mass m carrying a charge q can freely rotate about its axis. At t=0, the ring was at rest and no magnetic field was present. Then suddenly a magnetic field B was set perpendicular to the plane. Find the angular velocity acquired by the ring.
07
Sep
A thin non-conducting ring of mass m carrying a charge q can freely rotate about its axis. At t=0, the ring was at rest and no magnetic field was present. Then suddenly a magnetic field B was set perpendicular to the plane. Find the angular velocity acquired by the ring. A thin non-conducting ring of [...]
A thin non-conducting ring of mass `m` carrying a charge `q` can freely rotate about its axis. At the initial moment the ring was at rest and no magnetic field was present. Then a practically unifrom magnetic field was switched on, which was perpendicular to the planeof the ring and increased with time according to a certain law `B (t)`, Find the angular velocity `omega` of the ring as a function of the induction `B(t)`.
07
Sep
A thin non-conducting ring of mass `m` carrying a charge `q` can freely rotate about its axis. At the initial moment the ring was at rest and no magnetic field was present. Then a practically unifrom magnetic field was switched on, which was perpendicular to the planeof the ring and increased with time according to [...]
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A conducting rod of length l slides at constant velocity v on two parallel conducting rails ,
A square loop of side l having resistance R moves with constant velocity v ,
A straight horizontal conductor of length l ,
and mass_ m slides down on two smooth conducting fixed parallel rails ,
set inclined at an angle theta to the horizontal as shown in figure The top end of the bar are connected with a capacitor of capacitance C. The system is placed in a uniform magnetic field ,
Twelve wires of equal lengths are connected in the form of skelton cube which is moving with a velocity v in the direction of magnetic field B.find the emf in each arm of cube. ,
Two long parallel horizontal rails a ,
An infinite wire carries a current I. An S- shaped conducting rod of two semicircle each of radius r is placed at an angle theta to the wire. The enter of the conductor is at a distance d from the wire. If the rod translates parallel to the wire with a velocity v as shown in figure, calculate the emf induced across the ends OB of the rod.
07
Sep
An infinite wire carries a current I. An S- shaped conducting rod of two semicircle each of radius r is placed at an angle theta to the wire. The enter of the conductor is at a distance d from the wire. If the rod translates parallel to the wire with a velocity v as shown [...]
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A conducting rod of length l slides at constant velocity v on two parallel conducting rails ,
A square loop of side l having resistance R moves with constant velocity v ,
A straight horizontal conductor of length l ,
and mass_ m slides down on two smooth conducting fixed parallel rails ,
set inclined at an angle theta to the horizontal as shown in figure The top end of the bar are connected with a capacitor of capacitance C. The system is placed in a uniform magnetic field ,
Twelve wires of equal lengths are connected in the form of skelton cube which is moving with a velocity v in the direction of magnetic field B.find the emf in each arm of cube. ,
Two long parallel horizontal rails a ,
A copper rod length 19 m is moving with uniform velocity 10 m/s parallel to a long straight wire carring a current of 5 A.the rod is perpendicular to the wire with its ends at distances 0.01 and 0.2 m from it. calculate the emf induced in the rod.
07
Sep
A copper rod length 19 m is moving with uniform velocity 10 m/s parallel to a long straight wire carring a current of 5 A.the rod is perpendicular to the wire with its ends at distances 0.01 and 0.2 m from it. calculate the emf induced in the rod. A conducting rod of length l [...]
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A conducting rod of length l slides at constant velocity v on two parallel conducting rails ,
A square loop of side l having resistance R moves with constant velocity v ,
A straight horizontal conductor of length l ,
and mass_ m slides down on two smooth conducting fixed parallel rails ,
set inclined at an angle theta to the horizontal as shown in figure The top end of the bar are connected with a capacitor of capacitance C. The system is placed in a uniform magnetic field ,
Twelve wires of equal lengths are connected in the form of skelton cube which is moving with a velocity v in the direction of magnetic field B.find the emf in each arm of cube. ,
Two long parallel horizontal rails a ,
A conducting rod (OP) of length L rotates in form of a conical pendulum with an angular velocity ω about a fixed vertical axis passing through its end O. There is a uni- form magnetic field B in vertically downward direction. The rod makes an angle θ with the direction of the magnetic field. Calculate the emf induced across the ends of the rod.
07
Sep
A conducting rod (OP) of length L rotates in form of a conical pendulum with an angular velocity ω about a fixed vertical axis passing through its end O. There is a uni- form magnetic field B in vertically downward direction. The rod makes an angle θ with the direction of the magnetic field. Calculate [...]
Tags:
A conducting rod of length l slides at constant velocity v on two parallel conducting rails ,
A square loop of side l having resistance R moves with constant velocity v ,
A straight horizontal conductor of length l ,
and mass_ m slides down on two smooth conducting fixed parallel rails ,
set inclined at an angle theta to the horizontal as shown in figure The top end of the bar are connected with a capacitor of capacitance C. The system is placed in a uniform magnetic field ,
Twelve wires of equal lengths are connected in the form of skelton cube which is moving with a velocity v in the direction of magnetic field B.find the emf in each arm of cube. ,
Two long parallel horizontal rails a ,
The following equations represent transverse waves: y1 = A cos (kx – omega t ); y2 = A cos (kx + omega t) Identify the combination of the waves which will produce (1) standing waves and (2) a wave travelling in a direction making an angle 45
06
Sep
The following equations represent transverse waves: y1 = A cos (kx – omega t ); y2 = A cos (kx + omega t) Identify the combination of the waves which will produce (1) standing waves and (2) a wave travelling in a direction making an angle 45 A closed organ pipe of length l0 is [...]
A closed organ pipe of length l0 is resonating in 5th harmonic mode with rod clamped at two points l and 3l from one end. If the length of the rod is 4l and it is vibrating in first overtone, find the length of the rod.
06
Sep
A closed organ pipe of length l0 is resonating in 5th harmonic mode with rod clamped at two points l and 3l from one end. If the length of the rod is 4l and it is vibrating in first overtone, find the length of the rod. A closed organ pipe of length l0 is resonating [...]
A string is stretched by a block going over a pulley. The string vibrates in its fifth harmonic in unison with a particular tuning fork. When a beaker containing a liquid of density rho is brought under the block so that the block is completely
06
Sep
A string is stretched by a block going over a pulley. The string vibrates in its fifth harmonic in unison with a particular tuning fork. When a beaker containing a liquid of density rho is brought under the block so that the block is completely A rod of nickel of length l is clamped at [...]