Delve into the principles of electromagnetism with these MCQs. Learn about magnetic fields, electromagnetic induction, and applications of electromagnetism. Trending keywords like “physics MCQs on electromagnetism” and “magnetism quiz for students” enhance exam preparation.
What property of a substance determines how strongly it interacts with a magnetic field?
a) Charge
b) Mass
c) Magnetic moment
d) Density
The magnetic field lines around a current-carrying straight conductor are:
a) Circular
b) Radial
c) Straight
d) Concentric
What happens to the magnetic field strength around a current-carrying conductor when the current is doubled?
a) It doubles
b) It halves
c) It quadruples
d) It remains the same
The right-hand thumb rule is used to determine the:
a) Direction of electric current
b) Direction of magnetic field lines
c) Direction of electric field lines
d) Direction of gravitational force
What is the SI unit of magnetic field strength?
a) Tesla
b) Volt
c) Ohm
d) Weber
The region around a magnet where its magnetic influence can be detected is called the:
a) Magnetic field
b) Magnetic dipole
c) Magnetic axis
d) Magnetic domain
The north pole of a magnet is attracted to the:
a) North pole of another magnet
b) South pole of another magnet
c) Neutral point of another magnet
d) None of the above
The phenomenon of induced magnetism in a material when it is brought near a magnet is known as:
a) Electromagnetism
b) Magnetic induction
c) Magnetic domain alignment
d) Magnetic repulsion
The magnetic field lines inside a magnet:
a) Move from south to north
b) Move from north to south
c) Do not exist
d) Are concentric circles
Which of the following materials is attracted to a magnet?
a) Copper
b) Aluminum
c) Iron
d) Silver
Which of the following materials is a good conductor of magnetic field lines?
a) Wood
b) Rubber
c) Steel
d) Glass
When a current-carrying conductor is placed in a magnetic field, it experiences a force. This is known as:
a) Electromagnetic induction
b) Magnetic induction
c) Magnetic force
d) Magnetic repulsion
The direction of the magnetic field inside a solenoid is:
a) From south to north
b) From north to south
c) Circular
d) Along the axis of the solenoid
A coil of wire with an electric current passing through it is called a:
a) Solenoid
b) Capacitor
c) Resistor
d) Diode
The strength of the magnetic field inside a solenoid depends on the:
a) Diameter of the solenoid
b) Length of the solenoid
c) Number of turns of wire in the solenoid
d) Material of the solenoid
The magnetic field inside a solenoid is:
a) Uniform
b) Non-uniform
c) Zero
d) Concentrated at the ends
The phenomenon of generating an electromotive force (emf) in a coil when there is a change in magnetic flux is known as:
a) Inductance
b) Magnetic induction
c) Electromagnetic induction
d) Self-induction
The magnitude of the induced emf in a coil is directly proportional to the:
a) Number of turns in the coil
b) Rate of change of magnetic flux
c) Resistance of the coil
d) Current flowing through the coil
The device used to convert mechanical energy into electrical energy through electromagnetic induction is called a:
a) Generator
b) Motor
c) Transformer
d) Resistor
The device used to convert electrical energy into mechanical energy through electromagnetic induction is called a:
a) Generator
b) Motor
c) Transformer
d) Resistor
The magnetic field inside an ideal solenoid is:
a) Uniform
b) Non-uniform
c) Zero
d) Concentrated at the ends
The device used to increase or decrease the voltage in an AC circuit is called a:
a) Generator
b) Motor
c) Transformer
d) Resistor
An ideal transformer is one in which there is:
a) No energy loss
b) No voltage output
c) No current output
d) No magnetic field
The primary coil of a transformer is connected to a 110 V AC source. If the number of turns in the primary coil is 200 and the number of turns in the secondary coil is 800, what is the output voltage?
a) 27.5 V
b) 440 V
c) 220 V
d) 880 V
What type of current does a transformer work on?
a) AC only
b) DC only
c) Both AC and DC
d) None of the above
The phenomenon of creating a closed loop of current in a conductor by changing the magnetic field around it is called:
a) Magnetic induction
b) Electromagnetic induction
c) Self-induction
d) Mutual induction
The phenomenon of creating an emf in a coil due to the change in current in a neighboring coil is called:
a) Magnetic induction
b) Electromagnetic induction
c) Self-induction
d) Mutual induction
The strength of the magnetic field around a current-carrying straight conductor depends on the:
a) Voltage across the conductor
b) Current flowing through the conductor
c) Length of the conductor
d) Material of the conductor
The magnitude of the force experienced by a current-carrying conductor placed in a magnetic field depends on the:
a) Length of the conductor
b) Mass of the conductor
c) Current flowing through the conductor
d) All of the above
Which of the following materials is strongly attracted to a magnetic field?
a) Copper
b) Aluminum
c) Iron
d) Silver
The magnetic field lines inside a bar magnet:
a) Move from south to north
b) Move from north to south
c) Do not exist
d) Are concentric circles
Which of the following materials is weakly attracted to a magnetic field?
a) Copper
b) Aluminum
c) Iron
d) Silver
The magnetic field lines outside a magnet:
a) Move from south to north
b) Move from north to south
c) Do not exist
d) Are concentric circles
When a current-carrying conductor is placed perpendicular to a magnetic field, the force experienced by the conductor is:
a) Maximum
b) Minimum
c) Zero
d) Variable
The strength of the magnetic field inside a solenoid depends on the:
a) Diameter of the solenoid
b) Length of the solenoid
c) Number of turns of wire in the solenoid
d) Material of the solenoid
Which of the following statements is true about magnetic monopoles?
a) They have only one pole (north or south).
b) They have both north and south poles.
c) They do not exist.
d) They are found only in certain materials.
What property of a magnet determines its ability to attract other magnetic materials?
a) Magnetic moment
b) Magnetic field strength
c) Magnetic axis
d) Magnetic domain alignment
The magnetic field lines around a current-carrying circular loop are:
a) Concentric circles
b) Straight lines
c) Radial lines
d) Circular lines
The strength of the magnetic field around a current-carrying circular loop depends on the:
a) Radius of the loop
b) Diameter of the loop
c) Number of turns in the loop
d) Length of the loop
The direction of the magnetic field inside a current-carrying circular loop is:
a) Clockwise
b) Counterclockwise
c) Radial
d) Circular
What type of current does a solenoid work on?
a) AC only
b) DC only
c) Both AC and DC
d) None of the above
Which of the following materials is not affected by a magnetic field?
a) Copper
b) Aluminum
c) Iron
d) Plastic
What is the effect of placing an iron core inside a solenoid?
a) It reduces the magnetic field strength.
b) It increases the magnetic field strength.
c) It does not affect the magnetic field strength.
d) It changes the direction of the magnetic field.
What type of magnetism does a permanent magnet exhibit?
a) Induced magnetism
b) Ferromagnetism
c) Electromagnetism
d) Diamagnetism
Which of the following materials is weakly repelled by a magnetic field?
a) Copper
b) Aluminum
c) Iron
d) Silver
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