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If a charged particle kept at rest experiences an electromagnetic force,

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Important Questions on Magnetic Effects of Current and Magnetism

EASY
Physics
IMPORTANT
Two proton beams are moving in parallel direction. Which of the following statements are correct (multiple options may be correct)
HARD
Physics
IMPORTANT

A current carrying wire of length L is suspended horizontally by a spring of force constant K as shown. The system is in equilibrium. A magnetic field B is switched on into the plane of paper suddenly. Which of the following statements is correct?

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EASY
Physics
IMPORTANT
A steady electric current is flowing through a cylindrical conductor.
EASY
Physics
IMPORTANT
A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is
MEDIUM
Physics
IMPORTANT
Two identical current carrying co-axial loops, carry current I in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as C
MEDIUM
Physics
IMPORTANT

A rectangular loop carrying current i is shown in the diagram. If the magnetic field in the region is 2B0i^+B0 j^, then choose the correct statement(s).

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MEDIUM
Physics
IMPORTANT
The magnetic field induction at the centre of a current-carrying circular coil (coil 1) and a closed coil (coil 2), shaped as a quarter of a disc is found to be equal in magnitude. If both the coils have equal area, then find the ratio of the currents flowing in coil 2 and coil 1.