Moving Charges and Magnetism questions
775 published questions with worked solutions.
- The current sensitivity of a galvanometer can be increased by : (A) Decreasing the number of turns (B) Increasing the magnetic...
- Two parallel, long wires are kept 0.20 m apart in vacuum, each carrying current of x A in the same direction. If the force of...
- A singly ionized magnesium atom (A = 24) ion is accelerated to kinetic energy 5 keV, and is projected perpendicularly into a...
- A closely wounded circular coil of radius 5 cm. produces a magnetic field of 37.68 10^ -4 T at its center. The current through...
- A wire of length 314 cm carrying current of 14 A is bent to form a circle. The magnetic moment of the coil is _____ A-m^ 2 ....
- Two long current carrying conductors are placed parallel to each other at a distance of 8 cm between them. The magnitude of...
- Given below are two statements: Statement I : The electric force changes the speed of the charged particle and hence changes its...
- A long straight wire of circular cross-section (radius a) is carrying steady current I. The current I is uniformly distributed...
- The ratio of magnetic field at the centre of a current carrying coil of radius r to the magnetic field at distance r from the...
- A charge particle moving in magnetic field B, has the components of velocity along B as well as perpendicular to B. The path of...
- Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
- The magnetic intensity at the center of a long current carrying solenoid is found to be 1.6 10^3Am^ -1 . If the number of turns...
- Given below are two statements: Statement I: If the number of turns in the coil of a moving coil galvanometer is doubled then the...
- The current required to be passed through a solenoid of 15 cm length and 60 turns in order to demagnetize a bar magnet of...
- An electron is allowed to move with constant velocity along the axis of current carrying straight solenoid. (A) The electron will...
- An electron is moving along the positive x-axis. If uniform magnetic field is applied parallel to the negative z-axis, then A....
- The source of time varying magnetic field may be (A) a permanent magnet (B) an electric field changing linearly with time (C)...
- When a resistance of 5 W is shunted with a moving coil galvanometer, it shows a full scale deflection for a current of 250 mA,...
- An electron in a hydrogen atom revolves around the nucleus with a speed of 6.76 10^6ms^ -1 in an orbit of radius 0.52 Å. The...
- A long solenoid is formed by winding 70 turns cm^ -1 . If 2.0 A current flows, then the magnetic field produced inside the...
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