In the context of electric motors and generators, what does electromagnetic induction refer to?

• The process of converting mechanical energy into electrical energy

• The creation of a magnetic field by an electric current

• The rotation of a loop in a magnetic field

• The charging of a battery

What does an electric generator convert?

• Electrical energy into mechanical energy

• Mechanical energy into electrical energy

• Electrical energy into magnetic energy

• Magnetic energy into electrical energy

What is the significance of the permanent magnet in an electric motor?

• It stores the electrical energy

• It converts electrical energy into mechanical energy

• It provides the mechanical energy

• It creates a magnetic field that interacts with another to cause rotation

What component of an electric motor is responsible for making electrical contact with the rotating loop?

• The battery

• The brushes

• The commutator

• The permanent magnet

What is the role of the commutator in an electric motor?

• To support the copper wire loop

• To facilitate the rotation of the copper wire loop

• To generate electrical energy

• To convert mechanical energy into electrical energy

How does the magnetic field in an electric motor cause motion?

• By repelling the circuit

• By interacting with the permanent magnet's field

• By reducing the circuit's resistance

• By attracting the permanent magnet

What is the primary function of an electric motor?

• To convert mechanical force into electrical current

• To convert electrical current into mechanical force

• To store electrical energy

• To enhance magnetic fields

How can an electric motor be converted into a generator?

• By using a larger commutator

• By reversing the flow of current

• By attaching a windmill rotor and replacing the battery with a bulb

• By removing the permanent magnet

What initiates the production of electrical current in a generator?

• The mechanical force provided by a windmill rotor

• The magnetic field remaining constant

• The presence of a battery

• The rotation of the copper wire loop