WorksheetsTopic 5(ii) : Electromagnetic Induction
Total questions: 11
Worksheet time: 7mins
Changing current in a coil produces emf in the same coil. this phenomenon is known as
Mutual induction
Self induction
induced emf
induced current
Self induced emf is always proportional to the time rate of change of the current.
True
False
SI unit for self inductance, L is
Tesla(T)
Weber(Wb)
Henry(H)
Farad (F)
When a constant current of 5.0 A flows in a 400 turns solenoid of length, l and cross sectional area A, emf is induced in the coil.
True
False
Which of the following factors DOES NOT affect the self inductance of a coil?
The length of the coil
The current flows in the coil
The number of turn of the coil
The cross sectional area of the coil
An inductor opposes any change in:
voltage
current
frequency
reactance
Where is the energy being stored in an inductor carrying a steady current ?
In the electric field of the coil
In the circuit
In the power supply
In the magnetic field of the coil
The phenomenon due to which there is an induced current in one coil due to the current in a neighboring coil is?
Mutual induction
Steady current
Electromagnetism
Self induction
When a conductor is moved to cut through the magnetic flux, an _______________ is produced.
induced current
electromotive force
electromagnetic induction
internal resistance
The production of electric current by a changing magnetic field is called ____________________________________.
induced current
electromotive force
electromagnetic induction
internal resistance
