A constant magnetic field of 5T is passing through a static conducting loop of area 0.8m2, the induced emf is
Correct answer: C. Zero
- A. 4 V
- B. 10 V
- C. Zero
- D. 32 V
Explanation
The induced EMF (electromotive force) in a conducting loop is determined by Faraday's law of electromagnetic induction, which states that an EMF is induced when there is a change in magnetic flux through the loop. In this scenario, we have a constant magnetic field of 5T and a static conducting loop with an area of 0.8m². Since the magnetic field strength does not change, the magnetic flux through the loop remains constant, leading to an induced EMF of zero. Therefore, Option C is correct. Options A (4 V), B (10 V), and D (32 V) all propose values for the induced EMF that imply a change in magnetic flux, which does not exist in this instance due to the constancy of the magnetic field.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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