The time period of a thin bar magnet in Earth’s magnetic field is T
The time period of a thin bar magnet in Earth’s magnetic field is T. If the magnet is cut into two equal parts perpendicular to its length, the time period of each part in the […]
MP2001
Vessel A is filled with hydrogen while vessel B, whose volume is
Vessel A is filled with hydrogen while vessel B, whose volume is twice that of A is filled with the same mass of oxygen at the same temperature. The ratio of the mean kinetic energies […]
A resistance of 20 ohm is connected to a source of an alternating potential V
A resistance of 20 ohm is connected to a source of an alternating potential V=220 sin (100 πt). The time taken by the current to change from its peak value to r.m.s value is