COMEDK2024Morning ShiftPhysicsElectromagnetic InductionActual
Select the unit of the coefficient of mutual induction from the following.
Options
- Aweber. ampere
- Bvolt. ampere / second
- Cvolt. second / ampere
- Dampere / weber
Correct answer
C. volt. second / ampere
Step-by-step solution
The coefficient of mutual induction M is defined by the relation = M I , where is the magnetic flux and I is the current. From this relation, M = I . The unit of magnetic flux is Weber (Wb) and the unit of current I is Ampere (A). Thus, the unit of M is Weber/Ampere. Alternatively, using Faraday's law of induction, the induced electromotive force is given by = -M dI dt . Rearranging for M , we get M = dI/dt . The unit of electromotive force is Volt (V), and the unit of dI/dt is Ampere/second (A/s). Therefore, the u