Find the time required for a `50 Hz` alternating current to change its value from zero to the rms value.

Find the time required for a 50 Hz alternating current to change its value from zero to the r.m.s. value.

Find the time required for a 50Hz alternating current to become its value from zero to the rms value.

The time required for a 50Hz alternating current to change its value from zero to rms value is (in milli second)

The time required for a 50 Hz sinusoidal alternating current to changed its value from zero to the r.m.s. value

The time required for a 50 Hz sinusoidal alternating current to changed its value from zero to the r.m.s. value

Find the time required for a 60 Hz alternating current to reach its peak value starting from zero.

The time required for a 50Hz alternating current to increase from zero to 70.7% of its peak value is-

The time required for a 50Hz alternating current to increase from zero to 70.7% of its peak value is-