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A loop of wire is moved into a uniform magnetic field at a constant speed. What
Practice Questions
Q1
A loop of wire is moved into a uniform magnetic field at a constant speed. What happens to the induced EMF as it enters the field?
It increases
It decreases
It remains constant
It becomes zero
Questions & Step-by-Step Solutions
A loop of wire is moved into a uniform magnetic field at a constant speed. What happens to the induced EMF as it enters the field?
Steps
Concepts
Step 1: Understand that a loop of wire is being moved into a magnetic field.
Step 2: Recognize that the magnetic field is uniform, meaning it has the same strength and direction throughout.
Step 3: Know that when the loop enters the magnetic field, more of the loop's area is exposed to the magnetic field.
Step 4: Remember that the induced EMF (electromotive force) is related to the change in magnetic flux through the loop.
Step 5: As the area of the loop in the magnetic field increases, the magnetic flux through the loop also increases.
Step 6: Since the magnetic flux is increasing, the induced EMF will also increase.
Electromagnetic Induction
– The process by which a changing magnetic field within a closed loop induces an electromotive force (EMF) in the wire.
Faraday's Law of Induction
– The induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.
Magnetic Flux
– The product of the magnetic field strength and the area through which it acts, which changes as the loop enters the magnetic field.
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