A resistance of `20ohms` is connected to a source of an alternating potential `V=220sin(100pit)`. The time taken by the current to change from its peak value to r.m.s. value is

A resistance of 20 Omega is connected to a source of an alternating potential V=220 sin (100 pi t) . The time taken by the current to change from the peak value to rms value is

A resistance of 20 ohm is connected to a source of an alternating potential V = 200 cos (100 pi t) . The time taken by the current to change from its peak value to rms value alpha is

A resostance of 20 Omega is connected to a source of an alternating potential V=220 sin (100 pi t) . The time taken by the corrent to change from the peak value to rms value is

A 100 Omega iron is connected to an AC source of 220 V 50 Hz . Calculate the time taken by the current to change from its maximum value to rms value .

An AC source rated 220 V, 50 Hz is connected to a resistor. The time taken by the current to change from its maximum to the rms value is :

A resistance of 20 ohm is connected to a source of alternating current rated 110 V - 50 Hz. Find the r.m.s of current.

The frequency of an alternating current is 50 Hz. What is the minimum time taken by current to reach its peak value from rms value ?

An AC source is rated at 220V, 50 Hz. The time taken for voltage to change from its peak value to zero is