CURRENT ELECTRICITY QUIZ

The specific resistance of a metallic conductor ______ with rise in temperature.

Remains unchanged

Decreases

Increases

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Current velocity through a copper conductor is

independent of current strength

the same as propagation velocity of electric energy

of the order of a few ^.s/m

nearly 3 x 108 m/s

TRUE ANSWER : ?
YOUR ANSWER : ?

E. M. F. In a circuit

None of the listed here

Increases circuit resistance

Maintains potential difference

Decrease circuit resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

Temperature coefficient of resistance is expressed in terms of

ohms/°C

ohms/ohm°C

mhos/ohm°C

mhos/°C

TRUE ANSWER : ?
YOUR ANSWER : ?

The thickness of insulation provided on the conductor depends on

Both magnitude of voltage and current

The magnitude of current flowing through it

None of the listed here

The magnitude of voltage on the conductor

TRUE ANSWER : ?
YOUR ANSWER : ?

Two resistances Rl and Ri are connected in series across the voltage source where Rl > Ri. The largest drop will be across

Rl

None of them

Either Rl or Ri

Ri

TRUE ANSWER : ?
YOUR ANSWER : ?

Electric pressure is also called

Voltage

Resistance

Energy

Power

TRUE ANSWER : ?
YOUR ANSWER : ?

Out of the following which is not a poor conductor?

Tungsten

Cast iron

Copper

Carbon

TRUE ANSWER : ?
YOUR ANSWER : ?

Electrical current is due to the flow of

Neutral particles only

Both positive and negative charges

Negative charges only

Positive charges only

TRUE ANSWER : ?
YOUR ANSWER : ?

In a series circuit with unequal resistances

The highest resistance has the highest voltage drop

The lowest resistance has the highest current

The highest resistance has the most of the current through it

The lowest resistance has the highest voltage drop

TRUE ANSWER : ?
YOUR ANSWER : ?