An electric iron draws a current of $0.5\, A$ when the voltage is $200$ volt. Calculate the amount of electric charge flowing through it in one hour.
Explain the term resistance. Give its $SI$ unit of measurement.
You are given a resistance wire of length $50 \,cm$ and a battery of negligible resistance. In which of the following cases is the largest amount of heat generated
If the work done to take $3 \,C$ electric charge from one point to another point is $15 \,J$, what will be the potential difference between these two points?
What is the commercial unit of electrical energy? Represent it in terms of joules.