Home
Class 12
PHYSICS
A wheel with 4 spokes is placed with its...

A wheel with 4 spokes is placed with its plane perpendicular to a uniform magnetic field B of magnitude 0.5 T. The field is directed into the plane of the paper and is present over the entire region of the wheel as shown in Fig. When the switch S is closed, there is initial current of 6 A between the axis and the rim and the wheel begins to rotate. Resistances of the spokes are 1, 2, 4 and 8 `Omega`, respectively. Resistance of rim is negligible.
a. What is the direction of rotation of the wheel?
b. Radius of the wheel is 0.2 m. Calculate initial torque acting on the wheel.

Promotional Banner

Similar Questions

Explore conceptually related problems

A wheel with 20 metallic spokes each 1m long is rotated with a speed of 120 rpm in a plane perpendicular to magnetic field of 0.4G. The induced emf between axle and rim of wheel will be

A wheel with N spokes is rotated in a plane - perpendicular to the magnetic field B such emf e is induced between axie and rim of the wheel . In the same wheel number of spokes is made 3 N and the wheel is rotated in the same manner in the same field then new emf is ________ .

A wheel with 10 spokes each of length L m is rotated with a uniform angular velocity omega in a plane normal ti the magnetic field B. The emf induced between the axle and the rim of the wheel

A closed loop with the geometry shown in Fig. 3.9 is placed in a uniform magnetic field direction into the plane of the paper. If the magnetic field decreases with time, determine the direction of the induced emf in this loop.

A closed loop with the geometry shown in Fig. 3.9 is placed in a uniform magnetic field direction into the plane of the paper. If the magnetic field decreases with time, determine the direction of the induced emf in this loop.

A wheel with 10 spokes each of length 'L' m is rotated with a unifrom angular velocity omega in a plane normal to the magnetic field 'B' . The emf induced between the axle and the rim of the wheel.

A uniform but time varying magnetic field B(t) exist in a circular region of radius a and is directed into the plane of the paper as shown. The magnitude of the induced electric field at point P at a distance r form the centre of the circular region.

A uniform but time varying magnetic field B(t) exist in a circular region of radius a and is directed into the plane of the paper as shown. The magnitude of the induced electric field at point P at a distance r form the centre of the circular region.