Lakhmir Singh and Manjit Kaur Solutions for Chapter: Electricity, Exercise 3: Long Answer Type Questions

What do you understand by the term "potential difference"?

What is meant by saying that the potential difference between two points is $1 \mathrm{volt}$?

What is the potential difference between the terminals of a battery if $250 \mathrm{joules}$ of work is required to transfer $20 \mathrm{coulombs}$ of charge from one terminal of the battery to the other?

What is a voltmeter? How is a voltmeter connected in the circuit to measure the potential difference between two points? Explain with the help of a diagram.

State whether a voltmeter has high resistance or low resistance. Give a reason for your answer.