The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be ??
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Heating a magnet will ??
Value of permeability of free space in SI units is ??
Electromagnetic waves transport ??
A moving coil galvanometer of resistance 100? gives half-scale deflection for a current of 20mA. What will be the potential difference across it ??
Electromagnetic waves emitted from the antenna are ??
An alternating current or voltage ??
A capacitor of capacitance 30µF is charged by a constant current of 10mA. If initially, the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V ??
Electromagnetic waves travel in free space with the speed of ??
To find the r.m.s value of an alternating current mathematically we need to have ??
An electromagnetic wave consists of ??