Objective Questions or MCQs on Basic Electrical

Objective Questions or MCQs on Basic Electrical

    

 #)The voltage induced in an inductor is represented as,

product of its inductance and current through it.

ratio of its inductance to current through it.

ratio of current through it to its inductance.

product of its inductance and rate of change of current through it.

The instantaneous voltage across the inductor is expressed as the product of inductance and a rate of change of current through it as it doesn't allow any certain change of current through it. Voltage induced in an inductor is written as

#)  The unit of resistivity is

Ω.

Ω - metre.

Ω / metre.

Ω / m².

#) Instantaneous power in inductor is proportional to the

product of the instantaneous current and rate of change of current.

square of instantaneous current.

square of the rate of change of current.

temperature of the inductor.

The instantaneous voltage across the inductor is expressed as the product of inductance and rate of change of current through it. Power is expressed as the product of current and voltage. Hence instantaneous power in an inductor is proportional to the product of instantaneous current and rate of change of current through it.

#) How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?

10

60

600

1200

1 Ampere current means flowing of 1 Coulomb charge per second. That means 10 A current in 1 minute or 60 seconds implies 10 × 60 = 600 coulombs.