CURRENT ELECTRICITY QUIZ

Voltage dependent resistors are usually made from

Silicon carbide

Graphite

Charcoal

Nichrome

TRUE ANSWER : ?
YOUR ANSWER : ?

Varistors are

Carbon resistors

Resistor with zero temperature co-efficient

Non-linear resistors

Insulators

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The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is

None of the listed here

Negative

Positive

Zero

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

Metallic resistor

Carbon resistor

Wire wound resistor

Variable resistor

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Electric pressure is also called

Energy

Resistance

Voltage

Power

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One commercial unit of energy equals

One watt-hour

Ten kilowatt-hour

One kilowatt-hour

One watt-hour

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Ampere-hour is the unit of

Energy

Strength of current

Power

Quantity of electricity

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

600 Ω

1000 Ω

400 Ω

800 Ω

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When one lag of parallel circuit is opened out the total current will

Decreases

Increases

Become zero

None of the listed here

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In which of the following substances the resistance decreases with increase in temperature?

Copper

Constantan

Carbon

Silver

TRUE ANSWER : ?
YOUR ANSWER : ?

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