JEE MainPhysicsMagneticsMCQ+4 / −1
A magnetic dipole in a constant magnetic field has :
- Amaximum potential energy when the torque is maximum.
- Bzero potential energy when the torque is minimum.
- Czero potential energy when the torque is maximum.
- Dminimum potential energy when the torque is maximum.
More from Magnetics
- A negative test charge is moving near a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is :2017 · MCQ
- A magnetic dipole is acted upon by two magnetic fields which are inclined to each other at an angle of 75o. One of the fields has a magnitude of 15 mT. The dipole attains stable equilibrium at an angle of 30o with this field. The magnitude…2016 · MCQ
- To know the resistance G of a galvanometer by half deflection method, a battery of emf VE and resistance R is used to deflect the galvanometer by angle . If a shunt of resistance S is needed to get half deflection then G, R and S…2016 · MCQ
- Two identical wires and each of length , carry the same current . Wire is bent into a circle of radius and wire is bent to form a square of side . If and are the values of magnetic fields…2016 · MCQ
- A rectangular loop of sides and carrying a current of is placed in different orientations as shown in the figures below : If there is a uniform magnetic field of in the positive direction, in which… Includes diagram2015 · MCQ
- Two long current carrying thin wires, both with current are held by insulating threads of length and are in equilibrium as shown in the figure, with threads making an angle with the vertical. If wires have mass … Includes diagram2015 · MCQ
- A conductor lies along the -axis at and carries a fixed current of in direction (see figure). For a field … Includes diagram2014 · MCQ
- A charge is uniformly distributed over the surface of non-conducting disc of radius The disc rotates about an axis perpendicular to its plane and passing through its center with an angular velocity As a result of this…2012 · MCQ