Question
In an ideal parallel LC circuit, the capacitor is charged by connecting it to a D.C. source which is then disconnected. The current in the circuit.
✓
Answer
- Oscillates instantaneously
In an LC circuit current oscillates between, maximum and minimum value. So, LC circuit needs oscillations (electrical). It occurs due to discharging and charging of capacitor and magnetisation and demagnetisation of inductor
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If the equivalent resistance is to be increased, then the number of resistances should be connected in:
In a negative logic the following wave form corresponds to the
While using an electric bulb, the reflection for street lighting should be from(a) Concave mirror(b) Convex mirror(d) Parabolic mirror(d) Parabolic mirror
Assertion : Acceleration of a magnet falling through a long solenoid decreases.
Reason : The induced current produced in a circuit always flow in such direction that it opposes the change or the cause the produced it.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : The induced current produced in a circuit always flow in such direction that it opposes the change or the cause the produced it.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
A 10 V storage battery of negligible internal resistance is connected across a 50 Ω resistor. How much heat energy is produced in the resistor in 1 hour(a) 7200 J (b) 6200 J(c) 5200 J (d) 4200 J
In a semiconductor the separation between conduction band and valence band is of the order of(a) 100 eV(b) 10 eV(c) 1eV (d) 0 eV
Similarities of Biot–Savart’s law and Coulomb’s law for the electrostatics are:
- Both are long range and inversely proportional to the square of distance from the source to the point of interest.
- Both are linear in source.
- Both are produced by scalar sources.
- Both follow principle of superposition.
Two identical circular loops of metal wire are lying on a table without touching each other. Loop-A carries a current which increases with time. In response, the loop-B(a) Remains stationary(b) Is attracted by the loop-A(c) Is repelled by the loop-A(d) Rotates about its CM, with CM fixed
In a step up transformer, 220 V is converted into 200 V. The number of turns in primary coil is 600. What is the number of turns in the secondary coil(a) 60(b) 600(c) 6000 (d) 100
The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate. Light source is put on and a saturation photocurrent is recorded. An electric field is switched on which has a vertically downward direction.