What is the unit of electric current?

Which of the following formulas represents voltage $(V)$?

What are the conditions under which $Ohm's$ law is not obeyed?

Give a single word for $\frac{1 \text{ joule}}{1 \text{ coulomb}}$.

If a copper layer has to be deposited on a steel spoon by electroplating,where should the copper rod be connected?

If three bulbs of $100 \; W$, $60 \; W$, and $40 \; W$ are used for $2 \; \text{hours}$ daily in a house, how many units of electrical energy are consumed in $30 \; \text{days}$?