Q.1

Energy is stored by an inductor in an electrostatic field.

  • True
  • False
Q.2

Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is

  • 8 H
  • 32 μH
  • 64 μH
  • 248 μH
Q.3

Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is

  • 8 H
  • 32 μH
  • 64 μH
  • 248 μH
Q.4

An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is

  • 0 V
  • 6 V
  • 12 V
  • 4 V
Q.5

A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is

  • 9.9 mH
  • greater than 5 mH
  • 9.9 mH or greater than 5 mH
  • less than 0.6 mH
Q.6

An induced voltage is produced as a result of a dc voltage.

  • True
  • False
Q.7

Faraday's law states that relative motion between a magnetic field and a coil induces a voltage across the coil.

  • True
  • False
Q.8

The term choke is more commonly used in connection with an inductor used to block off high frequencies.

  • True
  • False
Q.9

Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is

  • 8 H
  • 32 μH
  • 64 μH
  • 248 μH
Q.10

An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is

  • 0 V
  • 6 V
  • 12 V
  • 4 V
Q.11

An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is

  • 0 V
  • 6 V
  • 12 V
  • 4 V
Q.12

Inductance is the property of an inductor that produces an opposition to any change in current.

  • True
  • False
Q.13

The voltage across a coil when di/dt =mA/s and L = 8 H is

  • 16 mV
  • 160 mV
  • 1.6 mV
  • 2.5 mV
0 h : 0 m : 1 s