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A wire is wrapped N times over a solid sphere of mass m which is placed on a smooth horizontal surface. A horizontal magnetic field of induction B is present. Find the (a) torque (b) angular acceleration experienced by the sphere
05
Sep
A wire is wrapped N times over a solid sphere of mass m which is placed on a smooth horizontal surface. A horizontal magnetic field of induction B is present. Find the (a) torque (b) angular acceleration experienced by the sphere so that the plane of the wire coil contains the long central axis of [...]
A ball is thrown at different angles with the same speed u and from the same point and it has the same range in both the cases. If y1 and y2 are the heights attained in the two cases, then y1+y2 is equal to
05
Sep
A ball is thrown at different angles with the same speed u and from the same point and it has the same range in both the cases. If y1 and y2 are the heights attained in the two cases, then y1+y2 is equal to A ball is thrown at different angles with the same speed [...]
A wire forms a closed circular loop, of radius = 1 m and resistance 5 ohm . The circle is centered on a long straight wire; at time t = 0 the current in the long straight wire is 10 rightward. Thereafter, the current changes according to i =10 A + 5 (The straight wire is insulated; so there is no electrical contact between it and the wire of the loop.) What is the magnitude of the current induced in the loop at times t > 0 .
05
Sep
A wire forms a closed circular loop, of radius = 1 m and resistance 5 ohm . The circle is centered on a long straight wire; at time t = 0 the current in the long straight wire is 10 rightward. Thereafter, the current changes according to i =10 A + 5 (The straight wire [...]
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A long copper wire carries a current of I ampere. Calculate the magnetic flux per meter of the wire for a plane surface S inside the wire as shown in Fig. ,
A wire forms a closed circular loop ,
of radius = 1 m and resistance 5 ohm . The circle is centered on a long straight wire; at time t = 0 the current in the long straight wire is 10 rightward. Thereafter ,
Two paper screens A and B are separated by 150 m. A bullet pierces A and B. The hole in B is 15 cm below the hole in A. If the bullet is travelling horizontally at the time of hitting A, then the velocity of the bullet A is
05
Sep
Two paper screens A and B are separated by 150 m. A bullet pierces A and B. The hole in B is 15 cm below the hole in A. If the bullet is travelling horizontally at the time of hitting A, then the velocity of the bullet A is then the velocity of the bullet [...]
A circular coil of wire 8 cm in diameter has 12 turns and carries a current of 5 A. The coil is in a field where the magnetic induction is 0.6 T. (a) What is the maximum torque on the coil? (b) In what position would the torque be half
05
Sep
A circular coil of wire 8 cm in diameter has 12 turns and carries a current of 5 A. The coil is in a field where the magnetic induction is 0.6 T. (a) What is the maximum torque on the coil? (b) In what position would the torque be half so that the plane of [...]
A body has an initial velocity of 3 m/s and has an acceleration of 1 m/s^2 normal to the direction of initial velocity. Then its velocity 4 s after the start is
05
Sep
A body has an initial velocity of 3 m/s and has an acceleration of 1 m/s^2 normal to the direction of initial velocity. Then its velocity 4 s after the start is A body has an initial velocity of 3 m/s and has an acceleration of 1 m/s^2 normal to the direction of initial velocity. [...]
A coil in the shape of an equilateral triangle of side 0.02 m is suspended from a vertex such that it is hanging in a vertical plane between the pole pieces of a permanent magnet producing a horizontal magnetic field of 5 * 10^-2 T.
05
Sep
A coil in the shape of an equilateral triangle of side 0.02 m is suspended from a vertex such that it is hanging in a vertical plane between the pole pieces of a permanent magnet producing a horizontal magnetic field of 5 * 10^-2 T. so that the plane of the wire coil contains the [...]
A projectile has a time of flight T and range R. If the time of flight is doubled, keeping the angle of projection same, what happens to the range?
05
Sep
A projectile has a time of flight T and range R. If the time of flight is doubled, keeping the angle of projection same, what happens to the range? A projectile has a time of flight T and range R. If the time of flight is doubled keeping the angle of projection same what happens [...]
The figure shows a wood cylinder of mass m and length L with N turns of wire wrapped around it longitudinally, so that the plane of the wire coil contains the long central axis of the cylinder.
05
Sep
The figure shows a wood cylinder of mass m and length L with N turns of wire wrapped around it longitudinally, so that the plane of the wire coil contains the long central axis of the cylinder. so that the plane of the wire coil contains the long central axis of the cylinder. The figure [...]
A square frame carry current Io is located in the same plane as a long straight wire carrying current I. the frame side has length l.the axis of a frame is parallel to the wire as shown .(a) Find the magnetic flux passing through the frame (b) the mechnical work to be performed to be framed through 90 degree about its axis .
05
Sep
A square frame carry current Io is located in the same plane as a long straight wire carrying current I. the frame side has length l.the axis of a frame is parallel to the wire as shown .(a) Find the magnetic flux passing through the frame (b) the mechnical work to be performed to be [...]