Capacitors and Capacitance

IMPORTANT

Capacitors and Capacitance: Overview

This topic consists of various concepts like Maximum Charge Stored on a Conductor,Charging of Capacitor,Dielectric Strength of an Insulator, etc.

Important Questions on Capacitors and Capacitance

EASY
IMPORTANT

Find the equivalent capacitance between A&B

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EASY
IMPORTANT

In the network shown below, the charge accumulated in the capacitor in steady state will be:

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EASY
IMPORTANT

In the given figure the total charge stored in the combination of capacitors is 100 µC. The value of ‘x’ is ______________.

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EASY
IMPORTANT

A capacitor of capacitance C is charged to a potential V. The flux of the electric field through a closed surface enclosing the positive plate of the capacitor is:

EASY
IMPORTANT

A capacitor of capacitance 8.0 µF is connected to a battery of emf 6.0 V through a resistance of 24 Ω. Find the current in the circuit (a) just after the connections are made and (b) one time constant after the connections are made.

EASY
IMPORTANT

Two identical capacitors are connected in series with a battery. Now, the battery is removed and loose wire ends are connected together then the final charge on each capacitor is

EASY
IMPORTANT

Two conductors are separated by distance of 1 cm in air. The dielectric strength of air is about 3×106 Vm-1. What maximum safe potential difference can be applied across conductors?

EASY
IMPORTANT

 The capacitance between the points A and B of the combination is

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MEDIUM
IMPORTANT

The separation between the two capacitor plates is 2 cm and the area of the plate is 300 cm2. Calculate the capacitance of the parallel plate capacitor when the dielectric material is placed between the plates? [The dielectric constant of the material is 5.5].
 

HARD
IMPORTANT

2 conducting objects one with charge of +Qand another with -Q are kept on x-axis at x=0 and
x=1 respectively. The electric field on the x-axis is given by 3Q (x²+43) If the capacitance of this
configuration of objects is C. Then find in ( F-1).

EASY
IMPORTANT

Condenser is a device used to store

MEDIUM
IMPORTANT

A parallel plate condenser has conducting plates of radius 12 cm separated by a distance of 5 mm. It is charged with a constant charging current of 0.16 A, the rate at which the potential difference between the plate change is

EASY
IMPORTANT

In a RC circuit, where R is resistance and C is capacitance which of the following has the dimension of time.

MEDIUM
IMPORTANT

A flat circular coil of 10 cm radius has 200 turns of wire. The coil is connected to a capacitor of 20μF placed in a uniform magnetic field whose induction decreases at a rate of 0.01Ts-1. Find the charge on capacitor

MEDIUM
IMPORTANT

A capacitor of capacity C1=2 μF is charged to a potential of 100 V. The charging battery is then removed and now C1 is connected to another uncharged capacitor of capacity C2=4 μF. One plate of C2 is earthed as shown. In steady state the charge on C1 (in μC) will be _____ .

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EASY
IMPORTANT

In steady state, current supplied by battery is

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MEDIUM
IMPORTANT

In an isolated charged capacitor, the distance between the plates is halved. Which of the following quantities get halved?

EASY
IMPORTANT

Two plates are at potentials -10V and +30V. If the separation between the plates is 2 cm then find the electric field between them.

HARD
IMPORTANT

Calculate final charge on 1μF capacitor:

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