The emf induced in a coil by a changing magnetic flux may have the unit as:
Correct answer: A. ms^(-1)A.
- A. ms^(-1)A.
- B. ms^(-2)A^(-1)
- C. (c) kgm^2s^(-3)A^(-1)
- D. kgms^2A^(-1)
Explanation
The correct unit for induced electromotive force (emf) is volts (V), and 1 volt is equivalent to 1 joule per coulomb. Using the formula \( \text{EMF} = -\frac{\Delta\Phi}{\Delta t} \), where \( \Delta\Phi \) is the change in magnetic flux, \( \Delta t \) is the change in time, and the unit of magnetic flux is Weber (Wb), the unit for emf becomesTherefore, the correct unit for emf is (a) ms^(-1)A
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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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