The electric potential of a positively charged body is positive,and the electric potential of a negatively charged body is negative.

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

$A$ series circuit has only one conducting path for the electrons that move through it; a parallel circuit has multiple conducting paths.

$(a)$ What is the total resistance of $n$ resistors each of resistance $R$ connected in:
$(i)$ series?
$(ii)$ parallel?
$(b)$ Calculate the resultant resistance of $3$ resistors $3 \ \Omega, 4 \ \Omega$,and $12 \ \Omega$ connected in parallel.

An electric bulb of resistance $480 \Omega$ is connected to a $220 \text{ V}$ main. Find the amount of electrical energy consumed in $10 \text{ seconds}$. (in $J$)

The potential difference across the terminals of a cell is $1.5 \ V$. If it is connected with a resistance of $30 \ \Omega$,calculate the current flowing through the circuit. (in $A$)