V.K. Sally Solutions for Chapter: Electricity, Exercise 3: EXERCISE - 3A

What is the SI unit of electric potential? (Choose from Ohm, Ampere, Volt, Joule)

What is the name of the unit obtained by dividing joules by coulombs? (Choose from: Volt, Ampere, Ohm)

Define the term "volt".

State the relationship between work, charge and potential difference for an electric circuit.
Calculate the potential difference between two terminals of a battery, if $100 \mathrm{joules}$ of work is required to transfer $20 \mathrm{coulombs}$ of charge from one terminal of battery to the other. 

Define the term Coulomb. 

State the relationship between electric current, the charge moving through conductor and time of flow. Calculate the charge passing through an electric bulb in $20 \mathrm{minutes}$, if the value of current is $20 \mathrm{mA}$.

How is direction of electric current related to direction of flow of electrons in a wire?

Calculate the current in a circuit, if $500 \mathrm{C}$ of charge passes through $10 \mathrm{minute}$.