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A metal wire PQ of mass 10 g lies at rest on two horizontal metal rails separated by 5 cm. A vertically downward magnetic field of magnitude 0.800 T exists in the space. The resistance of the circuit
05
Sep
A metal wire PQ of mass 10 g lies at rest on two horizontal metal rails separated by 5 cm. A vertically downward magnetic field of magnitude 0.800 T exists in the space. The resistance of the circuit A metal wire PQ of mass 10 g lies at rest on two horizontal metal rails separated [...]
A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2, carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T, as shown in Fig. (a) What is the torque experienced by the solenoid due to the field ? (b) If the solenoid is free to turn about the verticle direction, specify its orientations of stabvle and unstable equilibriums. What is the amount of work needed to displace the solenoid from its stable orientation to its unstable orientations ?
05
Sep
A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2, carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T, as shown in Fig. (a) What is the torque experienced by the solenoid due to [...]
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A closely wound solenoid of 1000 turns and area of cross-section 2.0×10^−4 m^2 ,
as shown in Fig. (a) What is the torque experienced by the solenoid due to the field ? (b) If the solenoid is free to turn about the verticle direction ,
carrying a current of 2.0 A. It is placed with its horizontal axis at 30∘ with the direction of a uniform horizontal magnetic field of 0.16 T ,
specify its orientations of stabvle and unstable equilibriums. What is the amount of work needed to displace the solenoid from its stable orientation to its unstable orientations ? ,
A bird is flying towards north with a velocity 40 kmh^−1 and a train is moving with velocity 40 kmh^−1 towards east. What is the velocity of the bird noted by a man in the train?
05
Sep
A bird is flying towards north with a velocity 40 kmh^−1 and a train is moving with velocity 40 kmh^−1 towards east. What is the velocity of the bird noted by a man in the train? A bird is flying towards north with a velocity 40 kmh^−1 and a train is moving with velocity 40 [...]
Two conducting rails in the drawing are tilted upward so they each make an angle of 37 with respect to the ground. The vertical magnetic field has a magnitude of 0.050T. The 0.20 kg aluminium rod
05
Sep
Two conducting rails in the drawing are tilted upward so they each make an angle of 37 with respect to the ground. The vertical magnetic field has a magnitude of 0.050T. The 0.20 kg aluminium rod Two conducting rails in the drawing are tilted upward so they each make an angle of 37 with respect [...]
A small magnet A makes 10 vibrations in 90 seconds in earth’s field. When another magnet B of short length is placed 0.1 m due south of the direction of earth’s field, the magnet A makes 10 vibrations in 45 seconds . Calculate the magnetic moment of magnet B. Given BH = 0.3 G
05
Sep
A small magnet A makes 10 vibrations in 90 seconds in earth’s field. When another magnet B of short length is placed 0.1 m due south of the direction of earth’s field, the magnet A makes 10 vibrations in 45 seconds . Calculate the magnetic moment of magnet B. Given BH = 0.3 G A [...]
Plot the acceleration-time graph of the velocity-time graph given in fig.
05
Sep
Plot the acceleration-time graph of the velocity-time graph given in fig. Plot the acceleration-time graph of the velocity-time graph given in fig. September 5, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 3 - Motion in One Dimension ,
The acceleration versus time graph of a particle moving in a straight line is shown in the Fig. The velocity-time graph of the particle would be
05
Sep
The acceleration versus time graph of a particle moving in a straight line is shown in the Fig. The velocity-time graph of the particle would be The acceleration versus time graph of a particle moving in a straight line is shown in the Fig. The velocity-time graph of the particle would be September 5, 2020 [...]
A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.20 m and a mass of 0.080 kg. A uniform magnetic field of magnitude 0.075 T is directed from the ceiling to the floor. When a current of I = 40 A exists in the wire, the wire swings upward and, at equilibrium, makes
05
Sep
A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.20 m and a mass of 0.080 kg. A uniform magnetic field of magnitude 0.075 T is directed from the ceiling to the floor. When a current of I = 40 A exists in [...]
Centers of two similar coils P and Q having same number of turns are located at the coordinates (0.4,0) and (0,0.3) such that the plane of coils are perpendicular to X-and Y-axis respectively. The areas of cross section of coils P and Q are in the ration 4:3 Coil P has 16 A current in clockwise direction and coil Q has 93–√A current in anticlockwise direction as seen from the origin. A small compass needle is placed at the origin. Find the deflection in the needle, assuming the earth’s magnetic field negligible and the radii of the coils very small compared to their distances from the origin.
05
Sep
Centers of two similar coils P and Q having same number of turns are located at the coordinates (0.4,0) and (0,0.3) such that the plane of coils are perpendicular to X-and Y-axis respectively. The areas of cross section of coils P and Q are in the ration 4:3 Coil P has 16 A current in [...]
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0) and (0 ,
Centers of two similar coils P and Q having same number of turns are located at the coordinates (0.4 ,
such that their axes are perpendicular to each other. Find the magnetic field at a point midway between the two magnets. ,
Two identical short bar magnets each of magnetic moment 12⋅5 A m^2 are placed at a separation of 10 cm between their centers ,
Two balls are dropped from the top of a high tower with a time interval of t0 second, where t0 is smaller than the time taken by the first ball to reach the floor which is perfectly inelastic. The distance S between the two balls, plotted against the time lapse t from the instant of dropping the second ball is best represented by
05
Sep
Two balls are dropped from the top of a high tower with a time interval of t0 second, where t0 is smaller than the time taken by the first ball to reach the floor which is perfectly inelastic. The distance S between the two balls, plotted against the time lapse t from the instant of [...]
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plotted against the time lapse t from the instant of dropping the second ball is best represented by ,
Two balls are dropped from the top of a high tower with a time interval of t0 second ,
where t0 is smaller than the time taken by the first ball to reach the floor which is perfectly inelastic. The distance S between the two balls ,