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Flashcards on Faraday's Law of Induction
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What is Faraday's Law of Induction?
Faraday's Law of Induction states that a change in magnetic field induces an electromotive force (EMF) in a closed circuit.
Who discovered Faraday's Law of Induction?
Michael Faraday
What is induced EMF?
Induced EMF is the electromotive force that is produced in a closed circuit due to a change in magnetic field.
What is the formula for calculating the induced EMF?
The formula for calculating the induced EMF is given by Faraday's Law: EMF = -N(dΦ/dt)
What does N represent in the formula for induced EMF?
N represents the number of turns in the wire coil.
What does dΦ/dt represent in the formula for induced EMF?
dΦ/dt represents the rate of change of magnetic flux through the wire coil.
What is electromagnetic induction?
Electromagnetic induction is the process of generating an induced EMF by changing the magnetic field through a conductor.
What is Lenz's Law?
Lenz's Law states that the direction of the induced current in a closed circuit is always such as to oppose the change that produced it.
What are some applications of Faraday's Law of Induction?
Some applications of Faraday's Law of Induction include electric generators, transformers, and induction cooktops.
What is the unit of measurement for magnetic flux?
The unit of measurement for magnetic flux is the Weber (Wb).
What is the direction of the induced EMF in a wire coil when the magnetic field through it is increasing?
The induced EMF in a wire coil is produced in such a way that it opposes the increase in magnetic field.
What is the direction of the induced EMF in a wire coil when the magnetic field through it is decreasing?
The induced EMF in a wire coil is produced in such a way that it opposes the decrease in magnetic field.
What happens to the induced EMF if the number of turns in the wire coil is increased?
If the number of turns in the wire coil is increased, the induced EMF also increases.
What happens to the induced EMF if the rate of change of magnetic flux is increased?
If the rate of change of magnetic flux is increased, the induced EMF also increases.
What is the relationship between magnetic field strength and the induced EMF?
The induced EMF is directly proportional to the magnetic field strength.
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Test Your Knowledge
Who is credited with discovering Faraday's Law of Induction?
Michael Faraday
Nikola Tesla
Isaac Newton
Albert Einstein
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What does Faraday's Law of Induction state?
A change in electric field induces a magnetic field
A change in magnetic field induces an electromotive force (EMF) in a closed circuit
The resistance of a circuit is directly proportional to the current flowing through it
The energy of a system remains constant unless acted upon by an external force
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What is electromagnetic induction?
The resistance of a circuit
The process of generating an induced EMF by changing the magnetic field through a conductor
The process of generating a magnetic field
The process of generating an electric field
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What is the formula for calculating the induced EMF?
EMF = I/R
EMF = V/A
EMF = -N(dΦ/dt)
EMF = E/mc²
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What does Lenz's Law state?
The direction of the current is always clockwise
The direction of the induced current is always such as to oppose the change that produced it
The resistance of a circuit is inversely proportional to the current flowing through it
The energy of a system remains constant unless acted upon by an external force
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What are some applications of Faraday's Law of Induction?
Electric generators, transformers, and induction cooktops
Solar panels and wind turbines
Thermometers and barometers
Microscopes and telescopes
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What is the unit of measurement for magnetic flux?
Volts
Watts
Webers
Ohms
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What is the direction of the induced EMF in a wire coil when the magnetic field through it is increasing?
It is clockwise
It is counterclockwise
It remains the same
It opposes the increase in magnetic field
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What is the direction of the induced EMF in a wire coil when the magnetic field through it is decreasing?
It is clockwise
It is counterclockwise
It remains the same
It opposes the decrease in magnetic field
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What happens to the induced EMF if the rate of change of magnetic flux is increased?
It decreases
It remains the same
It increases
It reverses direction
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