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WorksheetsElectromagnetic induction
Total questions: 15
Worksheet time: 14mins
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.
A(n) ___ electric current will create a changing magnetic field.
existing
direct
alternating
stable
Which coil will have the largest flux?
A
B
C
D
The scenario shown induces a voltage of magnitude V. If the magnet has twice the magnetic field but its motion stopped, how would the induced voltage change?
Voltage would be twice as large in the same direction.
Voltage would be half as large in the same direction.
Voltage would be twice as large in the opposite direction.
No voltage would be induced in the coil.
As the north pole of the magnet is moved into the coil, the magnetic flux is _________.
increasing
decreasing
remains constant
depends on the speed of the magnet
Magnets and coils are moved with velocities shown. Which will NOT induce a voltage in the coil?
A circular coil of area 1.5 m2 and number of turns 200 is placed in a 1.4 T magnetic field which is perpendicular to the plane of the coil as shown in the diagram. If this magnetic field is reduced to 0.20 T in 0.01 s, what is the e.m.f. induced in the coil?
1.8 ×102 V
2.4 ×102 V
3.0 ×104 V
3.6 ×104 V
