WorksheetsMutual induction
Total questions: 10
Worksheet time: 8mins
Changing current in a coil produces e.m.f in another, this phenomenon is known as
e.m.f
Self-induction
Induced e.m.f
Mutual induction
Elements with a definite value of inductance
are called inductors.
are called coils.
are called sources.
An iron core
increases the value of inductance.
decreases the value of inductance.
The value of mutual inductance is measured
in watts.
in henries.
The electrical energy consumed by a coil is stored in the form of:
an electrical field
a force field
an electrostatic field
a magnetic field
Mutual inductance between two magnetically coupled coils depends on
Permeability of the core material
Number of turns of the coils
Cross sectional area of their common core
All of the above
If in an iron cored coil the iron core is removed so as to make the air cored coil, the inductance of the coil will be
More
Less
The same
None of these
According to the Lenz’s Law,
the induced e.m.f is proportional to the magnetic field.
the direction of the induced e.m.f is such that it will oppose the change causing it.
Fleming’s Left hand rule can be used to determine the direction of induced e.m.f.
the induced e.m.f is always in opposite direction to the magnetic field.
Which of the following is not the unit for magnetic field strength?
Tesla
Weber per meter squared
Weber per second squared
Gauss
