class 10 current electricity

Electrical potential is ------------

• scalar quantity

• vector quantity

• both scalar and vector

• neither scalar nor vector

SI unit of resistivity (specific resistance) is ----------

• ohm

• ohm meter

• volt

• ampere

How is a voltmeter connected in the circuit to measure the potential difference between two points?

• series

• parallel

• according to the situation either series or parallel

• none

SI unit of electric current is -----------

• volt

• coulomb

• ampere

• ohm

SI unit of resistance is ------------

• ohm

• volt

• ampere

• coulomb

kilowatt hour is unit of

• energy

• power

• momentum

• force

An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, power consumed will be ---------------. [Use P = (V X V)/R]

• 100 W

• 75 W

• 50 W

• 25 W

The property of a conductor by which it obstructs the flow of current is known as ------------------ of the conductor

• voltage

• conductivity

• power

• resistance

Ammeter is used to measure ----------------.

• voltage

• electric current

• resistance

• resistivity

What is the direction of conventional current?

• positive terminal to negative terminal

• negative terminal to positive terminal

• depends on the condition

• none