Physics Test.6

An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?

Resistance of an ideal insulator is __________________?

Reciprocal of resistivity is called__________________?

Circuit which gives continuously varying potential is called _______________________?

There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?

Specific resistance of a wire____________________?

In the following figure, the terminal potential is ___________________ ?

Which one of the following materials is useful for making bulb filaments ?

If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________?

Why should a resistance be introduced in a circuit in series deliberately ?

All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?

Resistance of a conductor depends upon_________________?

A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________?

When same current passes for same time through a thick and thin wire_________________?

One kilowatt hour is the amount of energy delivered during _______________?

How much heat does a 40 W bulb generates in one hour ?

Resistance of a super conductor is ______________________?

Which one is the best material for making connecting wires ?

Internal resistance is the resistance offered by________________?

Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?