Priyanka B Solutions for Chapter: Electricity, Exercise 12: Assignment-6

Write down the relation between heat produced H in a conductor of resistance $R$ through which current $I$ passes for $t$ seconds.

What is the unit of electric work? Define it, in relation to quantity of charge and potential difference.

Name one device which works on Joule's heating effect. (Electric iron/ Voltmeter/ Ammeter)

Two identical immersion heaters are to be used to heat water in a large container. Which one of the following arrangement would heat the water faster;

(i) connecting the heaters in series with the main supply,

(ii) connecting the heaters in parallel with the main supply?

State Joule's law of heating and express it mathematically. Calculate the amount of heat generated when $18000 \mathrm{coulombs}$ of charge is transferred in one hour through a potential difference of $50 \mathrm{V}$.