What is the total electric charge on $100$ protons in Coulombs?

Which of the following is true for a series combination of three resistors?

What is the maximum resistance which can be made using five resistors each of $1/5 \ \Omega$ (in $\Omega$)?

Which device works on the heating effect of electric current?

The rating of an electric heater is $1100 \ W, 220 \ V$. Calculate its resistance when it operates at $220 \ V$. Also,calculate the energy consumed in $kWh$ in the month of November,if the heater is used daily for four hours at the rated voltage.

Derive an expression for equivalent resistance when three resistors of resistance $R_{1}, R_{2}$ and $R_{3}$ are connected in parallel.