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Figure shows a rectangular 20-trun coil of wire of dimensions 10 cm by 5.0 cm. It carries a current of 0.10 A and is hinged along one long side. It is mounted in the xy. Plane, at angle θ=30∘ to the direction of a uniform magnetic field of magnitude 0.50 T. In unit-vector notation, what is the torque acting on the coil about the hinge line?
04
Sep
Figure shows a rectangular 20-trun coil of wire of dimensions 10 cm by 5.0 cm. It carries a current of 0.10 A and is hinged along one long side. It is mounted in the xy. Plane, at angle θ=30∘ to the direction of a uniform magnetic field of magnitude 0.50 T. In unit-vector notation, what [...]
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at angle θ=30∘ to the direction of a uniform magnetic field of magnitude 0.50 T. In unit-vector notation ,
Figure shows a rectangular 20-trun coil of wire of dimensions 10 cm by 5.0 cm. It carries a current of 0.10 A and is hinged along one long side. It is mounted in the xy. Plane ,
what is the torque acting on the coil about the hinge line? ,
A, B and C are parallel conductors of equal lengths carrying currents I, I and 2 I respectively. Distance between A and B is x. Distance between B and C is also x. F 1 is the force exerted by B on A. F 2 is the force exerted by C on A. Choose the correct answer.
04
Sep
A, B and C are parallel conductors of equal lengths carrying currents I, I and 2 I respectively. Distance between A and B is x. Distance between B and C is also x. F 1 is the force exerted by B on A. F 2 is the force exerted by C on A. Choose the [...]
Three long straight wires are connected parallel to each other across a battery of negligible internal resistance. The ratio of their resistances are 3:4:5. What is the ratio of distances of middle wire from the others if the net forces experienced by it is zero.
04
Sep
Three long straight wires are connected parallel to each other across a battery of negligible internal resistance. The ratio of their resistances are 3:4:5. What is the ratio of distances of middle wire from the others if the net forces experienced by it is zero. A and B are two conductors carrying a current i [...]
A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength B occurs only at the lower edge. It carries a current I . Find the change in the reading of the spring balance if the direction of current is reversed.
04
Sep
A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength B occurs only at the lower edge. It carries a current I . Find the change in the reading of the spring balance if the direction of current is reversed. A and B are two conductors [...]
Two identical sources of sound S1 and S2 produce intensity I0 at a point p equidistant from each source. (a) Determine the intensity of each source at the point P. (b) If the power of S1 is reduced to 64% and phase difference between the two sources is varied
04
Sep
Two identical sources of sound S1 and S2 produce intensity I0 at a point p equidistant from each source. (a) Determine the intensity of each source at the point P. (b) If the power of S1 is reduced to 64% and phase difference between the two sources is varied they are used together so that [...]
A fixed horizontal wire carries a current of 200 A. Another wire having a mass per unit length 10−2 kg/m is placed below the first wire at a distance of 2 cm and parallel to is. How much current must be passed through the second wire if it floats in air without any support? What should be the direction of current in it?
04
Sep
A fixed horizontal wire carries a current of 200 A. Another wire having a mass per unit length 10−2 kg/m is placed below the first wire at a distance of 2 cm and parallel to is. How much current must be passed through the second wire if it floats in air without any support? What [...]
Two sound sources of same frequency produce sound intensities I0 and 4I0 at a point P when used separately. Now, they are used together so that the sound waves from them reach P with a phase difference phi.
04
Sep
Two sound sources of same frequency produce sound intensities I0 and 4I0 at a point P when used separately. Now, they are used together so that the sound waves from them reach P with a phase difference phi. they are used together so that the sound waves from them reach P with a phase difference [...]
A horizontal rod of mass 10 g and length 10 cm is placed on a smooth plane inclined at an angle of 60∘ with the horizontal with the length of the rod parallel to the edge of the inclined plane. A uniform magnetic field induction B is applied vertically downwards. If the current through the rod is 1⋅73 ampere, the value of B for which the rod remains stationary on the inclined plane is
04
Sep
A horizontal rod of mass 10 g and length 10 cm is placed on a smooth plane inclined at an angle of 60∘ with the horizontal with the length of the rod parallel to the edge of the inclined plane. A uniform magnetic field induction B is applied vertically downwards. If the current through the [...]
A and B are two conductors carrying a current i in the same direction, x and y are two electron beams moving in the same direction. There will be :
04
Sep
A and B are two conductors carrying a current i in the same direction, x and y are two electron beams moving in the same direction. There will be : A and B are two conductors carrying a current i in the same direction x and y are two electron beams moving in the same [...]
Two travelling sinusoidal waves described by the wave functions Y1 = (5.00 m ) sin(pie (4.00x – 1200t)) Y2 = (5.00 m) sin (pie(4.00 x – 1200t – 0.250)) where x, y1 and y2 are in metres and t is in seconds. (a) What is
04
Sep
Two travelling sinusoidal waves described by the wave functions Y1 = (5.00 m ) sin(pie (4.00x – 1200t)) Y2 = (5.00 m) sin (pie(4.00 x – 1200t – 0.250)) where x, y1 and y2 are in metres and t is in seconds. (a) What is Two travelling sinusoidal waves described by the wave functions Y1 [...]