Related InterviewSolutions

• A magnetic field that varies in magnitude from point to point but has a constant direction (east to west) is set up in a chamber. A charged particle enters the chamber and travels undeflected along a straight path with constant speed. What can you say about the initial velocity of the particle?
• A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon(A) Shape of loop(B) Size of loop(C) Value of current(D) Magnetic field
• An electron travelling west to east enters a chamber having a uniform electrostatic field in north to south direction. Specify the direction in which a uniform magnetic field should be set up to prevent the electron from deflecting from its straight-line path.
• A long straight wire of radius ‘a’ carries a steady current I. The current is uniformly distributed across its cross-section. The ratio of the magnetic field at a/2 and 2a is(A) \(\frac{1}{4}\)(B) \(\frac{1}{2}\)(C) 1(D) 4
• A uniform magnetic fields get modified, when two specimen X and Y are placed in it. Identify X and Y.
• What is the angle of dip at the equator and at the pole?
• An ammeter and a millimeter are converted from the same galvanometer. Out of the two, which current measuring instrument has higher resistance.
• Why is an ammeter always connected in series?