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Quiz on Alarm

This is a timed quiz. You will be given 120 seconds to answer all questions. Are you ready?

120

0%

If the resistance of an incandescent light bulb changes as the voltage across the bulb is changed, which of the following is true ?

The bulb is said to have a low ionization potential

The bulb is a type of non-linear resistance..

The internal inductance of the bulb causes this change

The bulb is said to have a low ionization potential

Correct! Wrong!

When current flows through heater coil it glows but supply wiring does not glow because

supply wires arc made of superior material

resistance of heater coil is more than that supply wires.

current through supply line flows at slower speed

none

Correct! Wrong!

For a fixed supply voltage the current flowing through a conductor will decrease when

length of the conductor is increased

cross-sectional area of the conductor is increased

cross-sectional area is increased and length is decreased

none

Correct! Wrong!

Which method can be used for absolute measurement of resistance ?

Wheatstone bridge method

Raleigh method

Ohm's law method

none

Correct! Wrong!

Quiz on Alarm

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