Faraday's Law

Which of the following best describes Faraday's Law of Electromagnetic Induction?

• It states that a change in magnetic field within a closed loop induces an electromotive force (EMF).

• It states that electric current is directly proportional to voltage and inversely proportional to resistance.

• It states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

• It states that energy cannot be created or destroyed, only transformed.

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According to Faraday's Law, what is the unit of the induced electromotive force (EMF)?

• Volt

• Ampere

• Ohm

• Tesla

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Which of the following experiments is associated with Faraday's Law?

• Dropping a magnet through a coil and measuring the induced current.

• Measuring the resistance of a wire using a multimeter.

• Observing the deflection of a compass needle near a current-carrying wire.

• Heating a metal rod and measuring its expansion.

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In Faraday's Law, what does the term 'flux' refer to?

• The rate of flow of electric charge.

• The amount of magnetic field passing through a given area.

• The resistance offered by a material to the flow of electric current.

• The potential difference between two points in a circuit.

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Which mathematical expression represents Faraday's Law of Electromagnetic Induction?

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• It indicates the direction of the induced EMF opposes the change in magnetic flux.

• It shows that the EMF is always negative.

• It represents the magnitude of the induced EMF.

• It signifies that the EMF is directly proportional to the change in flux.

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Which of the following is a real-world application of Faraday's Law?

• Electric generators

• Light bulbs

• Batteries

• Capacitors

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How does the number of turns in a coil affect the induced EMF according to Faraday's Law?

• The induced EMF is directly proportional to the number of turns.

• The induced EMF is inversely proportional to the number of turns.

• The induced EMF is independent of the number of turns.

• The induced EMF is equal to the square of the number of turns.

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What happens to the induced EMF if the rate of change of magnetic flux is doubled?

• The induced EMF is doubled.

• The induced EMF is halved.

• The induced EMF remains the same.

• The induced EMF becomes zero.

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Which scientist is credited with the discovery of electromagnetic induction, which is described by Faraday's Law?

• Michael Faraday

• Isaac Newton

• Albert Einstein

• James Clerk Maxwell