Calculate the resistance of an electric bulb which allows a $10 \ A$ current when connected to a $220 \ V$ power source. (in $Omega$)

State Ohm's law. How can it be verified experimentally? Does it hold good under all conditions? Comment.

An electric geyser is connected to a $220 \; V$ line and consumes $4.4 \; kWh$ of electrical energy in $1 \; hour$. What is the resistance of the geyser?

$A$ hot plate of an electric oven connected to a $220 \ V$ line has two resistors $A$ and $B$ each of $22 \ \Omega$ resistance. These resistors may be used separately,in series,or in parallel. Find the current flowing in all the three cases.

If $1 \text{ ampere}$ electric current passes through a conductor,how many electrons will pass per second?

What is the symbol used to denote the unit of resistance,ohm?