The voltage induced in an inductor is represented as,

A. Product of its inductance and current through it.
B. Ratio of its inductance to the current through it.
C. Ratio of the current through it to its inductance.
D. Product of its inductance and rate of change of current through it.

Magnetic flux has the unit of

A. Newton
B. Ampere-turn
C. Weber
D. Tesla

The unit of resistivity is

A. Ω.
B. Ω – metre.
C. Ω / metre.
D. Ω / m².

The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

A. R ω
B. 2r ω
C. 4r ω
D. 8r ω

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

A. 10
B. 60
C. 600
D. 1200

The resistivity of the conductor depends on

A. Area of the conductor.
B. Length of the conductor.
C. Type of material.
D. None of these.

Inductor does not allow the sudden change of

A. Current
B. Voltage
C. Power
D. None of the above

Power dissipation in ideal inductor is

A. Maximum
B. Minimum
C. Zero
D. A finite value

Which of the following are the passive elements?

A. Resistor
B. Bulb
C. Both
D. None of these.

Capacitor does not allow the sudden change of ?

A. Current
B. Voltage
C. Power
D. None of the above