A circular loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the magnetic field strength is doubled?
Practice Questions
1 question
Q1
A circular loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the magnetic field strength is doubled?
Induced EMF is halved
Induced EMF remains the same
Induced EMF is doubled
Induced EMF is quadrupled
According to Faraday's law of electromagnetic induction, the induced EMF is directly proportional to the rate of change of magnetic flux. If the magnetic field strength is doubled, the induced EMF will also double.
Questions & Step-by-step Solutions
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Q
Q: A circular loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the magnetic field strength is doubled?
Solution: According to Faraday's law of electromagnetic induction, the induced EMF is directly proportional to the rate of change of magnetic flux. If the magnetic field strength is doubled, the induced EMF will also double.
Steps: 6
Step 1: Understand that a circular loop of wire is placed in a magnetic field.
Step 2: Know that the magnetic field strength is a measure of how strong the magnetic field is.
Step 3: Learn about Faraday's law, which states that the induced EMF (electromotive force) in a loop is related to the change in magnetic flux through the loop.
Step 4: Recognize that magnetic flux depends on the strength of the magnetic field and the area of the loop.
Step 5: If the magnetic field strength is doubled, the magnetic flux through the loop also doubles.
Step 6: Since the induced EMF is directly proportional to the change in magnetic flux, if the magnetic field strength doubles, the induced EMF will also double.
