The S.I. unit of power is

A DC circuit has ___________ as a load

The substances which have a large number of free electrons and offer a low resistance are called

In any network of wires carrying currents, the algebraic sum of all currents meeting at a point is equal to

You have to replace 1500 ohms resistor in radio. You have no 1500 ohms resistor but have several 1000 ohms ones which you would connect

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

Which of the following material has nearly zero temperature coefficient of resistance

The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?

The curve representing ohm's law is

A resistance having rating 10 ohms, 10 W is likely to be a

If a number of resistors are connected in parallel, then the reciprocal of total resistance is equal to

The purpose of load in an electric circuit is to

Insulating materials have the function of

Which of the following statement is true both for a series and a parallel D.C. circuit?

The resistance of wire varies inversely as

One coulomb of charge is equal to the charge of

If a current of 5A flows through a resistor of 12 ohm then the power developed and the energy dissipated in 2 minutes are

With rise in temperature the resistance of semi-conductors

A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is______ ohms.

Electrical appliances are not connected in series because