Induced EMF in A.C. generator can be increased by:
Correct answer: C. Increasing area of coil
- A. Decreasing area of coil
- B. Decreasing magnetic field
- C. Increasing area of coil
- D. Slowing down speed of coil
Explanation
As, ε = BΔA/Δt Thus, induced emf can be increased by increasing area of coil. Hence, option C is correct.
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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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