Electricity Tes...

Calculate the unknown resistance R of the circuit as shown in figure, all resistance are connected in the series. The current is flowing through circuit is 2A and battery is of 20 voltage.

Three resistors ($$2, 5$$ and $$7$$ ohm) are wires as shown in the diagram. The equivalent resistance of this combination (in ohm) is:

Two electrical bulbs have tungsten filament of same length. If one of them gives 60 watts and other 100 watts, then

The resistors of resistances $$2\Omega, 4\Omega, 5\Omega$$ are connected in parallel. The total resistance of the combination will be:

If four resistances, each of value $$1\ ohm$$, are connected in series, what will be the resultant resistance?

Calculate the equivalent resistance when two resistances of $$3\ \Omega$$ and $$6\ \Omega$$ are connected in parallel.

Two resistances are connected in parallel and a current is sent through the combination. The current divides itself:

Electrical power P is given by the expression  P = $$\dfrac{Q \times V}{t}$$. time. What does $$Q$$ and $$V$$ stand for?

What do you add to distilled water for making it to conduct electricity.

Two resistance are connected in series as shown in diagram. What is the current through the $$5\ ohm$$ resistance?