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Questions and Answers
What is the process of generating current in a conductor by placing the conductor in a changing magnetic field called?
What is the process of generating current in a conductor by placing the conductor in a changing magnetic field called?
- Resistance
- Insulation
- Induction (correct)
- Conduction
Why is the process of generating current in a conductor by placing the conductor in a changing magnetic field called induction?
Why is the process of generating current in a conductor by placing the conductor in a changing magnetic field called induction?
- Because there is no physical connection between the conductor and the magnet (correct)
- Because there is no force acting on the free electrons
- Because there is physical connection between the conductor and the magnet
- Because it produces maximum resistance
What is one requirement for electromagnetic induction to take place?
What is one requirement for electromagnetic induction to take place?
- The conductor must be parallel to the magnetic lines of force
- The conductor must be insulated from the magnetic field
- The conductor must be perpendicular to the magnetic lines of force (correct)
- The conductor must be stationary
How is the direction that the induced current flows determined?
How is the direction that the induced current flows determined?
What instrument is used to measure current in the animation above?
What instrument is used to measure current in the animation above?
What is the process called when current is produced in a conductor by placing it in a changing magnetic field?
What is the process called when current is produced in a conductor by placing it in a changing magnetic field?
Why is the conductor required to be perpendicular to the magnetic lines of force during electromagnetic induction?
Why is the conductor required to be perpendicular to the magnetic lines of force during electromagnetic induction?
What determines the direction that the induced current flows during electromagnetic induction?
What determines the direction that the induced current flows during electromagnetic induction?
What is the instrument used to measure current in the animation above?
What is the instrument used to measure current in the animation above?
What causes current to be induced in a conductor during electromagnetic induction?
What causes current to be induced in a conductor during electromagnetic induction?
Which type of current is generated in a conductor during electromagnetic induction?
Which type of current is generated in a conductor during electromagnetic induction?
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Study Notes
Electromagnetic Induction
- The process of generating current in a conductor by placing the conductor in a changing magnetic field is called electromagnetic induction or induction.
- This process is called induction because the changing magnetic field induces an electric field in the conductor, which in turn produces an electric current.
Requirements for Electromagnetic Induction
- One requirement for electromagnetic induction to take place is that the conductor must be in a changing magnetic field.
Direction of Induced Current
- The direction that the induced current flows is determined by the direction of the changing magnetic field and the orientation of the conductor.
- For the induced current to flow, the conductor must be perpendicular to the magnetic lines of force.
Measuring Current
- The instrument used to measure current in the animation is an ammeter.
Characteristics of Electromagnetic Induction
- During electromagnetic induction, alternating current (AC) is generated in the conductor.
- The changing magnetic field causes an electric field to be induced in the conductor, resulting in the flow of current.
- The direction of the induced current is determined by the direction of the changing magnetic field and the orientation of the conductor.
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