Distilled water acts as ........ for electricity.

An electric heater rated $1200 \ W$ operates $2 \ h$ per day. Find the cost of the energy required to operate it for $30$ days at ₹ $5.00$ per unit.

Which electrical appliance with the given rating will draw the maximum current from the source?

The resistivity of semiconductor materials is $..........$.

$(a)$ Calculate the resistance of the wire using the graph.
$(b)$ How many $176 \,\Omega$ resistors in parallel are required to carry $5\, A$ on a $220\, V$ line?
$(c)$ Define electric power. Derive the relation between power,potential difference,and resistance.

Why is much less heat generated in long electric cables than in filaments of electric bulbs?