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Questions and Answers
What type of effect does an electric current produce?
What type of effect does an electric current produce?
- Heat effect
- Light effect
- Magnetic effect (correct)
- Electric effect
What happens when an electric current flows through a wire?
What happens when an electric current flows through a wire?
- The wire becomes hot
- A magnetic field is produced around the wire (correct)
- The wire emits light
- The wire becomes electrified
What is the relationship between electric current and magnetic field?
What is the relationship between electric current and magnetic field?
- They are interrelated (correct)
- They are directly proportional
- They are inversely proportional
- They are unrelated
What is the principle behind the operation of electric motors?
What is the principle behind the operation of electric motors?
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Study Notes
Electric Current Effects
- An electric current produces a magnetic field around the conductor.
- The flow of electric current through a wire generates heat due to the resistance of the wire.
Magnetic Field and Electric Current
- An electric current flowing through a wire produces a magnetic field around the wire.
- The strength of the magnetic field depends on the magnitude of the electric current.
Electric Motor Principle
- Electric motors operate on the principle that an electric current produces a magnetic field, which interacts with the motor's magnetic field to produce rotational motion.
- The interaction between the two magnetic fields generates a torque, causing the motor to rotate.
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