Which value of AC represents the equivalent DC value that would produce the same heating effect?

When the speed of a dc motor increases the armature current

An alternating voltage of $E = 200\sqrt 2 \sin (100t)V$ is connected to a condenser of $1\mu F$ through an a.c. ammeter the reading of the ammeter will be.

A $100\,\,W$ bulb produces an electric field of $2.9\,\,V/m$ at a point $3\,\,m$ away. If the bulb is replaced by $400\,\,W$ bulb without disturbing other conditions, then the electric field produced at the same point is

An AC voltage is given by $V = 311\sin(100\pi t)$. What is the RMS value of the voltage?

An inductor of reactance $1\,\Omega$ and resistor of $2\Omega$ are connected in series. To the terminals of a 6v (rms) a.c. source. The power dissipated in the circuit is

The instantaneous value of an alternating current is given by $i = 5sin(100\pi t)$. What is its peak value?

A $100\,\,W$ bulb produces an electric field of $2.9\,\,V/m$ at a point $3\,\,m$ away. If the bulb is replaced by $400\,\,W$ bulb without disturbing other conditions, then the electric field produced at the same point is

For a purely resistive AC circuit, what is the phase difference between the voltage and current?

If the direction of i is reversed, $\left( {{V_B} - {V_A}} \right)$ will be

The time taken by an alternating current of 50 Hz in reaching from zero to its maximum value will be