What is the unit of electric potential difference?

Which solution is used as an electrolyte in a Voltaic cell?

Five bulbs are connected in a parallel circuit. If the second bulb blows out,what happens?

$A$ thick wire and a thin wire of the same material are successively connected to the same circuit to find their respective resistance. Which one will have lower resistance? Give reason.

State $Ohm's$ law. How can it be verified?

Three resistors $R_{1}$,$R_{2}$,and $R_{3}$ are connected in parallel between points $A$ and $B$. The equivalent resistance $R$ is given by: