Moving Charges ...

Two long straight wires are set parallel to each other. Each carries a current I in the same direction and the separation between them is 2r. The intensity of magnetic field at a point P midway between them is

A wire carrying current I is shaped as shown in Fig. Section AB is quarter circle of radius r. the magnetic field is directed

Two long straight wires are set parallel to each other. Each carries a current I in the same direction and separation between them is 2r. magnitude of magnetic field midway between them is

Fig shows a conducting loop ADCA carrying current I and placed in a region of uniform magnetic field induction B₀. the part ADC forms a semicircle of radius R. The force on the semicircle part of the loop ADC is equal to

A current carrying circular loop is placed in x – y plane fig. Magnetic field is switched in z – direction. The loop will

Electron, portion and α – particle are released perpendicular to a magnetic field with same kinetic energy. Then the radius of curvature of the circular path of

Three long straight parallel wires carrying currents, are arranged as shown in fig. The force experienced by a 25 cm length of wire C is

Electron of mass m and charge q is traveling with a speed of v along a circular path of radius r at right angles to a uniform magnetic field of intensity B. the speed of the electron is doubled and the magnetic field is halved, the resulting path would have a radius