A loop of wire is placed in a uniform magnetic field. If the field strength is i

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Question: A loop of wire is placed in a uniform magnetic field. If the field strength is increased, what happens to the induced current? (2023)

Options:

Correct Answer: It increases

Exam Year: 2023

Solution:

If the magnetic field strength increases, the magnetic flux through the loop increases, inducing a current according to Faraday\'s law.

A loop of wire is placed in a uniform magnetic field. If the field strength is increased, what happens to the induced current? (2023)

A loop of wire is placed in a uniform magnetic field. If the field strength is increased, what happens to the induced current? (2023)

Step 1: Understand that a loop of wire can have a current induced in it when it is placed in a magnetic field.
Step 2: Know that the strength of the magnetic field is called the magnetic field strength.
Step 3: Recognize that when the magnetic field strength increases, it affects the magnetic flux through the loop.
Step 4: Remember that magnetic flux is the amount of magnetic field passing through the loop.
Step 5: Realize that an increase in magnetic flux through the loop induces a current in the wire.
Step 6: Apply Faraday's law, which states that a change in magnetic flux induces an electromotive force (EMF) and thus a current.

Electromagnetic Induction – The process by which a changing magnetic field within a closed loop induces an electromotive force (EMF) and consequently a current.
Faraday's Law – The principle that the induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.