CURRENT ELECTRICITY QUIZ

With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals

10 W

40 W

60 W

20 W

TRUE ANSWER : ?
YOUR ANSWER : ?

All of the following are equivalent to watt except

Amperes/volt

(Amperes) ohm

Amperes × volts

Joules/sec.

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Zero

Negative

Positive

TRUE ANSWER : ?
YOUR ANSWER : ?

The rating of a fuse wire is always expressed in

Ampere-volts

kWh

Amperes

Ampere-hours

TRUE ANSWER : ?
YOUR ANSWER : ?

A thermistor has

Positive temperature coefficient

Variable temperature coefficient

Zero temperature coefficient

Negative temperature coefficient

TRUE ANSWER : ?
YOUR ANSWER : ?

The current in the circuit having constant resistance is tripled. The power increases

3 times

1/9 times

9 times

1/3 times

TRUE ANSWER : ?
YOUR ANSWER : ?

Ohm's law is not applicable to

Dc circuits

Small resistors

Semi-conductors

High currents

TRUE ANSWER : ?
YOUR ANSWER : ?

The insulation on a current carrying conductor is provided

To prevent shock

None of above factors

Both of the listed here

To prevent leakage of current

TRUE ANSWER : ?
YOUR ANSWER : ?

No current flow between two charged bodies if they have same

Potential

Capacity

None of the listed here

Charge

TRUE ANSWER : ?
YOUR ANSWER : ?

Whether circuit may be AC. or D.C. one, following is most effective in reducing the magnitude of the current.

Reactor

Resistor

Inductor

Capacitor

TRUE ANSWER : ?
YOUR ANSWER : ?

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