Electricity Tes...

If a bulb of 60 W is  connected across a source of 220 V, the current drawn by it is:

Substances that do not allow free flow of charge through them are called __________.

The energy consumed by $$100 \ W$$ electric bulb in $$5 \ hours$$ is:

Which of the following does not belong to the group formed by the others?

Two wires of equal length, one of copper and the other of manganin (an alloy) have the same thickness. Which one can be used for electrical heating devices? Why?

The given figure is a 'material tester'.
Which of the following objects will make the bulb glow when put on the gap shown?

The equivalent resistance for the '$$n$$' resistors with resistance $$R$$ connected in parallel is 

If we touch a naked current carrying wire, we get a shock. This is because our body is a :

Three unequal resistors in parallel are equivalent to a resistant 1 ohm. If two of them are in the ratio 1 :2 and if no resistance value is fractional, the largest of the three resistance in ohm is :-

Two 220 volt, 100 watt bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 volt a.c.supply line. The power drawn by the combination in each case respectively will be