David Sang and Graham Jones Solutions for Chapter: Capacitance, Exercise 14: EXAM-STYLE QUESTIONS

Author:David Sang & Graham Jones

David Sang Physics Solutions for Exercise - David Sang and Graham Jones Solutions for Chapter: Capacitance, Exercise 14: EXAM-STYLE QUESTIONS

Attempt the free practice questions on Chapter 23: Capacitance, Exercise 14: EXAM-STYLE QUESTIONS with hints and solutions to strengthen your understanding. Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access solutions are prepared by Experienced Embibe Experts.

Questions from David Sang and Graham Jones Solutions for Chapter: Capacitance, Exercise 14: EXAM-STYLE QUESTIONS with Hints & Solutions

EASY
AS and A Level
IMPORTANT

A capacitor in an electronic circuit is designed to slowly discharge through an indicator lamp. It is decided that the time taken for the capacitor to discharge needs to be increased. Four changes are suggested:

(1) Connect a second capacitor in parallel with the original capacitor.

(2) Connect a second capacitor in series with the original capacitor.

(3) Connect a resistor in parallel with the lamp.

(4) Connect a resistor in series with the lamp.

Which suggestions would lead to the discharge time being increased?

EASY
AS and A Level
IMPORTANT

This is a circuit that can be used to measure the capacitance of a capacitor.

Question Image

The reed switch vibrates back and forth at a frequency of 50 Hz. Each time it makes contact with A, the capacitor is charged by the battery so that there is a p.d. of 12 V across it. Each time it makes contact with B, it is fully discharged through the resistor.

Calculate the average current in the resistor.

EASY
AS and A Level
IMPORTANT

This is a circuit that can be used to measure the capacitance of a capacitor.

Question Image

The reed switch vibrates back and forth at a frequency of 50 Hz. Each time it makes contact with A, the capacitor is charged by the battery so that there is a p.d. of 12 V across it. Each time it makes contact with B, it is fully discharged through the resistor.

Calculate the average power dissipated in the resistor.

EASY
AS and A Level
IMPORTANT

A second capacitor of the same value is connected in series with the first capacitor.

Discuss the effect on both the current recorded and the power dissipated in the resistor.

EASY
AS and A Level
IMPORTANT

Explain what is meant by the time constant of a circuit containing capacitance and resistance.

EASY
AS and A Level
IMPORTANT

 A circuit contains capacitors of capacitance 500μF and 2000μF In series with each other and in series with a resistance of 2.5kΩ.

Calculate the effective capacitance of the capacitors in series.

EASY
AS and A Level
IMPORTANT

A circuit contains capacitors of capacitance 500μF and 2000μF In series with each other and in series with a resistance of 2.5kΩ.

Calculate the charge on the capacitor plates when there is a potential difference of 50 V Across the plates.

MEDIUM
AS and A Level
IMPORTANT

A circuit contains capacitors of capacitance 500μF and 2000μF in series with each other and in series with a resistance of 2.5kΩ. Calculate the time taken for the charge on the plates to fall to 5% of the charge when there was a p.d. of 50 V across the plates.