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1.
In an 
circuit the current
circuit the current
2.
At high frequency, the capacitor offer
3.
In the circuit shown below, the key K is closed at t = 0. The current through the battery is
4.
Voltage V and current i in AC circuit are given by
V=50 sinâ¡(50t)volt
i=50 sinâ¡
The power dissipated in circuit is
V=50 sinâ¡(50t)volt
i=50 sinâ¡
The power dissipated in circuit is
5.
A resistance of 
and an inductance of 
are connected in series in a 
ac circuit. The impedance of this combination is very nearly
and an inductance of are connected in series in a ac circuit. The impedance of this combination is very nearly
6.
Time constant of LC circuit is
7.
Let C be the capacitance of a capacitor discharging through a resister R. Suppose 
is the time taken for the energy stored in the capacitor to reduce to half its initial value and 
is the time taken for the charge to reduce to one-fourth its initial value. Then the ratio 
will be
is the time taken for the energy stored in the capacitor to reduce to half its initial value and is the time taken for the charge to reduce to one-fourth its initial value. Then the ratio will be
8.
A series R-C circuit is connected to AC Voltage source. Consider two cases: (A) when C is without a dielectric medium and (B) when C is filled with dielectric of constant 4. The current 
through the resistor and voltage 
across the capacitor are compared in the two cases. Which of the following is/are true?
through the resistor and voltage across the capacitor are compared in the two cases. Which of the following is/are true?
9.
A square metal wire loop 
of side 10 cm and resistance 1 
is moved with a constant velocity 
in a uniform magnetic field of induction 
, as shown in figure. The magnetic field lines are perpendicular to the plane of the loop (directed into the paper). The loop is connected to network 
of resistors each of value 3
The resistance of the lead wires 
are negligible. The speed of the loop so as to have a steady current of mA in the loop is
of side 10 cm and resistance 1 is moved with a constant velocity in a uniform magnetic field of induction , as shown in figure. The magnetic field lines are perpendicular to the plane of the loop (directed into the paper). The loop is connected to network of resistors each of value 3 The resistance of the lead wires are negligible. The speed of the loop so as to have a steady current of mA in the loop is
10.
If the coils of a transformer are made up of thick wire, then