The rule to determine the direction of a current induced in a coil due to its rotation in a magnetic field is :

What is the unit of measure of magnetic field ?

Assertion (A): The electric field inside a charged metallic sphere is zero. Reason (R): Charges reside only on the outer surface of a conductor. Choose the correct option.

An electron of mass M kg and charge e coulomb travels from rest through a potential difference of V volts. The final energy in joules would be

Which of the following radiation is used to get relief from body aches ?

Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A): Gauss's law in magnetostatics and electrostatics are respectively, ∮B·dS = 0 and ∮…