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WorksheetsHW: Magnetic Induction
Total questions: 16
Worksheet time: 15mins
Name the following law: A changing magnetic field creates an electric current in a coil.
Ampere's Law
Faraday's Law
Lenz's Law
Coulomb's Law
Name the following law: A moving magnet creates an opposing magnetic field.
Ampere's Law
Faraday's Law
Lenz's Law
Coulomb's Law
Determine the direction of induced current if the magnetic field is increasing.
Clockwise
Counter clockwise
No induced current
Determine the direction of induced current if the magnetic field is constant.
Clockwise
Counter clockwise
No induced current
Determine the direction of the current across the resistor ab when coil B is brought closer to coil A while the switch S is closed.
a to b
b to a
no current
Predict the direction of induced current in a metal ring when the ring is moved towards a straight conductor with constant speed v. The conductor is carrying current I in the direction shown in the figure.
Clockwise
Counter Clockwise
A coil spins in a magnetic field. Of the following
which causes an increase in the induced EMF in
the coil?
Spinning the coil faster
Removing the coil from the magnetic field
Keeping the flux at a constant rate
Decreasing the number of turns of wire in
the coil
Magnetic flux is related to magnetic field strength by the formula
Φ=BA
Φ=BA2
Φ=B/A
Φ=B/A2
Faraday’s law states that an induced emf is proportional to
The rate of change of the magnetic field
the rate of change of the electric field
the rate of change of the magnetic flux
the rate of change of the electric flux
A permanent magnet is quickly introduced into the center of an aluminum closed ring. With this ring ...
will be attracted to the magnet;
push away from the magnet;
remain stationary;
it will start to rotate about an axis passing through its center.
The turn is contained in a magnetic field such that the lines of induction of the magnetic field are parallel to the plane of the turn. Which statement is correct?
An induction current flows clockwise;
The induction current in the coil flows counter-clockwise;
The induction current in the coil will occur when the magnetic field induction changes;
There is no induction current in the coil.
