Moving Charges and Magnetism questions
775 published questions with worked solutions.
- What is the relation between voltage sensitivity S_V and the current sensitivity S_I of a moving coil galvanometer? (Given that G...
- A moving coil galvanometer has 28 turns and area of coil is 4 10^ -2 m^2 . If the magnetic field is 0.2 T, then to increase the...
- If a shunt of (1/10)^ th of the coil resistance is applied to a moving coil galvanometer, then its sensitivity becomes
- The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a...
- A galvanometer with a scale divided into 150 equal divisions has a current sensitivity of 10 div/mA and voltage sensitivity of 2...
- In an ammeter, 4% of the main current is passing through the galvanometer. If shunt resistance is 5 , then resistance of...
- In a cyclotron, the electric field between the dees is being reversed in 2.3 10^ -8 s . The cyclotron frequency will be
- An alpha particle of positive charge +2e is compelled to rotate along a circular path of radius r in a cyclotron with linear...
- A uniform magnetic field acts at right angles to the direction of motion of electrons as a result, the electron moves in a...
- The maximum kinetic energy of protons in a cyclotron of radius 0.4 m in a magnetic field of 0.5 T is (mass of proton =1.67 10^...
- A cyclotron in which flux density is 1.4 T is employed to accelerate protons. How rapidly should the field between the dees be...
- Statement 1: In a shunted galvanometer, only 10% current passes through the galvanometer. The resistance of the galvanometer is...
- A straight wire of length 0.5 metre and carrying a current of 1.2 ampere placed in a uniform magnetic field of induction 2 tesla....
- A closely wound solenoid of 2000 turns and area of cross-section 1.5 10^ -4 m^2 carries a current of 2.0 A. It is suspended...
- The magnetic field at the centre of a circular coil of radius r carrying current I is B_1. The field at the centre of another...
- The magnetic field at a distance r from a long wire carrying current I is 0.4 tesla. The magnetic field at a distance 2r is
- When a certain length of wire is turned into one circular loop, the magnetic induction at the centre of the coil due to some...
- A current I flows along the length of an infinitely long, straight and thin-walled pipe. Then [IIT JEE 1993, AIEEE 2007, Similar...
- The magnetic induction at a point P which is distant 4 cm from a long current carrying wire is 10^ -8 tesla. The field of...
- If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be [CBSE PMT 1999,...
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