List of top Physics Questions on Alternating current asked in Bihar Board XII

The peak value of an alternating current is 10 A. Its root mean square value will be?
Write down two uses of a shunt.
What is wattless current?
Convert the binary number \(1101\) into the decimal system.
Explain UNIVAC and Fax.
Find the increase in energy of a condenser of capacity \(6\, \text{pF}\) on changing the potential difference from 10 V to 20 V.
What are ohmic and non-ohmic resistances? Write down one example of each.
What is a cyclotron? State its two limitations.
What value of alternating current is measured by a hot wire ammeter?
Mean value of alternating current in a full cycle is:
If the phase difference between alternating current and e.m.f is \(\phi\), then the value of power factor is:
In an AC circuit, power is lost in only:
An alternating electric current is represented by the equation \( i = 0.6 \sin 100 \pi t \). The frequency of the alternating current is:
Current used in electroplating is:
A galvanometer is converted into an ammeter by adding:
The value of current obtained in a moving coil galvanometer is proportional to:
The value of \((p_0 g q)^{1/2}\) is:
An electron of charge \( e \) moves parallel to uniform lines of force in a magnetic field \( B \) with velocity \( v \). The force acting on the electron is:
Derive the condition for resonance in the L-C-R series alternating current circuit. Find the expression for resonant frequency.
For resonance condition in any L-C-R circuit, the phase-difference between applied voltage and current is
In step-up transformer, the value of current in secondary coil compared to primary coil is
The root mean square (r.m.s) value of alternating current equation I = 60 sin 100 πt is
The impedance of L-R circuit is