# Direction of Induced EMF mcq

## Direction of Induced EMF mcq

When a conductor moves in a magnetic field, the induced EMF is always directed:
a) Along the direction of motion
b) Opposite to the direction of motion
c) Parallel to the magnetic field
d) Perpendicular to the magnetic field

Answer: d) Perpendicular to the magnetic field

According to Lenz’s law, the direction of the induced EMF opposes the:
a) Initial magnetic field
b) Final magnetic field
c) Motion of the conductor
d) Direction of the current

Answer: c) Motion of the conductor

When a magnet is moved towards a closed loop of wire, the induced EMF in the wire creates a current that flows:
a) Clockwise in the loop
b) Counterclockwise in the loop
c) In the direction of magnet movement
d) Opposite to the direction of magnet movement

Answer: b) Counterclockwise in the loop

When a magnet is moved away from a closed loop of wire, the induced EMF in the wire creates a current that flows:
a) Clockwise in the loop
b) Counterclockwise in the loop
c) In the direction of magnet movement
d) Opposite to the direction of magnet movement

Answer: a) Clockwise in the loop

If a conductor is moved parallel to the magnetic field lines, the induced EMF in the conductor will be:
a) Maximum
b) Minimum
c) Zero
d) Negative

If a conductor moves at an angle to the magnetic field lines, the induced EMF in the conductor will be:
a) Maximum
b) Minimum
c) Zero
d) Negative

The direction of the induced EMF in a coil is determined by:
a) Right-hand rule
b) Left-hand rule
d) Ohm’s law

When a loop of wire is rotated in a uniform magnetic field, the induced EMF is maximum when the loop is:
a) Parallel to the magnetic field
b) Perpendicular to the magnetic field
c) At an angle of 45 degrees to the magnetic field
d) Not influenced by the magnetic field

Answer: b) Perpendicular to the magnetic field

The direction of the induced EMF in a transformer primary coil is determined by the:
a) Number of turns in the primary coil
b) Number of turns in the secondary coil
c) Direction of current in the secondary coil
d) Rate of change of magnetic flux

Answer: d) Rate of change of magnetic flux

According to Faraday’s law, the magnitude of the induced EMF is directly proportional to the:
a) Resistance of the circuit
b) Current in the circuit
c) Magnetic field strength
d) Rate of change of magnetic flux

Answer: d) Rate of change of magnetic flux

## Direction of Induced EMF mcq diagram

When a conducting loop is placed in a changing magnetic field, the induced EMF in the loop will be:
a) Constant
b) Increasing
c) Decreasing
d) Zero

The induced EMF in a coil is zero when the magnetic field passing through the coil is:
a) Increasing
b) Decreasing
c) Uniform
d) Nonexistent

The direction of the induced EMF in a generator is determined by the:
a) Armature resistance
b) Magnetic field strength
c) Rate of rotation of the armature
d) Load connected to the generator

Answer: c) Rate of rotation of the armature

The direction of the induced EMF in a generator changes every:
a) Second
b) Minute
c) Rotation
d) Cycle

When a magnet is moved inside a coil, the induced EMF can be increased by:
a) Increasing the resistance of the coil
b) Decreasing the number of turns in the coil
c) Increasing the speed of magnet movement
d) Decreasing the strength of the magnet

Answer: c) Increasing the speed of magnet movement

When a current-carrying wire is placed in a magnetic field, the wire experiences a force in a direction:
a) Parallel to the magnetic field
b) Opposite to the magnetic field
c) Perpendicular to the magnetic field
d) Tangential to the magnetic field

Answer: c) Perpendicular to the magnetic field

The induced EMF in a coil can be increased by:
a) Decreasing the number of turns in the coil
b) Decreasing the magnetic field strength
c) Increasing the area of the coil
d) Decreasing the rate of change of magnetic flux

Answer: c) Increasing the area of the coil

When a current-carrying conductor is placed in a magnetic field, the induced EMF is caused by:
a) The motion of the conductor
b) The presence of a magnetic field
c) The flow of current in the conductor
d) The resistance of the conductor

Answer: a) The motion of the conductor

When a magnetic field is applied to a loop of wire, the induced EMF can be increased by :
a) Increasing the temperature of the wire
b) Decreasing the number of turns in the loop
c) Increasing the magnetic field strength
d) Decreasing the area of the loop

Answer: c) Increasing the magnetic field strength

The direction of the induced EMF in a solenoid can be reversed by:
a) Increasing the number of turns in the solenoid
b) Decreasing the current in the solenoid
c) Reversing the direction of the magnetic field
d) Decreasing the diameter of the solenoid

Answer: c) Reversing the direction of the magnetic field

When a loop of wire is moved parallel to a magnetic field, the induced EMF is:
a) Maximum
b) Minimum
c) Zero
d) Negative

The direction of the induced EMF in a transformer secondary coil is determined by the:
a) Number of turns in the primary coil
b) Number of turns in the secondary coil
c) Direction of current in the primary coil
d) Rate of change of magnetic flux

Answer: c) Direction of current in the primary coil

The direction of the induced EMF in a coil is opposite to the change in:
a) Magnetic field strength
b) Current direction
c) Temperature
d) Magnetic flux

The induced EMF in a conductor is zero when the conductor is:
a) Stationary in a magnetic field
b) Experiencing a constant magnetic field
c) Not connected to a circuit
d) Made of a non-conductive material

Answer: a) Stationary in a magnetic field

The direction of the induced EMF in a coil is reversed when:
a) The coil is moved away from a magnetic field
b) The coil is rotated in a magnetic field
c) The magnetic field strength is increased
d) The coil is heated

Answer: b) The coil is rotated in a magnetic field

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