List of top Physics Questions on Reactance

An electronic device operates at $2\text{ MHz}$. The oscillating circuit has an inductance $20\times10^{-5}\text{ H}$. What is the capacitive reactance of the resonant circuit?

An inductor of 200 \(\mu\)H is connected to an alternating source of frequency 50 Hz. Then the inductive reactance is:

The inductive reactance of a coil is \(R\ \Omega\). If the inductance of a coil is doubled and frequency of a.c. supply is also doubled then the new inductive reactance will be

An electric motor when loaded has an effective resistance of $30\,\Omega$ and an inductive reactance of $40\,\Omega$. If the motor is powered by a source with maximum voltage of $420\,V$, the maximum current is

The alternating voltage and current in an electric circuit are respectively given by \(E = 100\sin 100\pi t\), \(I = 5\sin 100\pi t\). The reactance of the circuit will be

The impedance of a circuit consists of 3 \( \Omega \) resistance and 4 \( \Omega \) reactance. The power factor of the circuit is:

In an a.c. circuit with phase voltage V and current I, the power dissipated is