Q.1
Among the following, which is the right formula for inductance?
  • a) L=emf*t/I
  • b) L=emf/t*I
  • c) L=emf*I/t
  • d) L=emf*t*I
Q.2
Among the following, which is the right formula for inductance of N turns?
  • a) L=et/Ni
  • b) L=N*i *e*t
  • c) L=Ni/et
  • d) L=N/iet
Q.3
For a coil having a magnetic circuit of constant reluctance, the flux is ___________ to the current.
  • a) Directly proportional
  • b) Inversely proportional
  • c) Not related
  • d) Very large compared to
Q.4
For a coil having a magnetic circuit of constant reluctance, if the flux increases, what happens to the current?
  • a) Increases
  • b) Decreases
  • c) Remains constant
  • d) Becomes zero
Q.5
The unit for inductance is ___________
  • a) Ohm
  • b) Henry
  • c) A/m
  • d) A/s
Q.6
If either the inductance or the rate of change of current is doubled, the induced e.m.f?
  • a) Remains constant
  • b) Becomes zero
  • c) Doubles
  • d) Becomes half
Q.7
If the current changes fromtoin 2 seconds and the inductance is 10H, calculate the emf.
  • a) 5V
  • b) 10V
  • c) 15V
  • d) 20V
Q.8
If the current changes fromtoin x sec and inductance is 10H. The emf is 10V, calculate the value of x.
  • a) 2s
  • b) 3s
  • c) 4s
  • d) 5s
Q.9
If the current changes fromtoinand the emf is 10V. Calculate the inductance.
  • a) 10H
  • b) 20H
  • c) 30H
  • d) 40H
0 h : 0 m : 1 s