An electric bulb is rated $60\,W$, $220\,V$. The resistance of its filament is ............. $\Omega$
$708$
$870$
$807$
$780$
Which of the following statement is false
If current in an electric bulb changes by $1\%$, then the power will change by ............ $\%$
Two identical bulbs are connected in parallel across an ideal source of emf $E$. The ammeter $A$ and voltmeter $V$ are ideal. If bulb $B_2$ gets fused, then
If a high power heater is connected to electric mains, then the bulbs in the house become dim, because there is a
Electric power is transmitted over long distances through conducting wires at high voltage because