Understanding Electric Motors

What must be complete for a circuit to work?

• The wires must be colored

• A light bulb must be present

• A battery must be fully charged

• The path must be complete

What happens when the poles of two magnets are brought close to each other?

• Nothing happens

• They always repel

• They merge into a single magnet

• Opposite poles attract and the same poles repel

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What is an electromagnet?

• A natural magnet found in the earth

• A magnet that can be turned on or off

• A magnet that can only attract metals

• A type of permanent magnet

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What causes the poles on an electromagnet to switch places?

• Moving the magnet closer to metal objects

• Heating the electromagnet

• Flipping the battery

• Shaking the electromagnet

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What is the purpose of a commutator in an electric motor?

• To cool down the motor

• To automatically switch the direction of current

• To increase the motor's power

• To reduce the motor's speed

What is the stator in an electric motor?

• The part that spins

• The switch that controls the motor

• The part that doesn't move

• The battery that powers the motor

What is the rotor in an electric motor?

• The outer casing of the motor

• The wires inside the motor

• The battery connection

• The part that spins

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How can the torque of an electric motor be increased?

• By using a lighter armature

• By adding more loops to the armature

• By using a smaller battery

• By using fewer wires

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What is the role of brushes in an electric motor?

• To clean the commutator

• To maintain electrical contact with the commutator

• To lubricate the motor

• To cool down the motor

What type of motor was primarily discussed in the video?

• Servo motor

• AC motor

• Stepper motor

• DC motor

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