Q. Emf induced in a coil depends on

किसी कुंडली में प्रेरित ईएमएफ निर्भर करता है

A
Number of turns
घुमावों की संख्या
B
Rate of change of flux
फ्लक्स परिवर्तन की दर
C
Area of coil
कुंडल का क्षेत्रफल
D
All of these
इन सब

Explanation

Induced emf E\mathcal{E} in a coil depends on:

  • Number of turns NN (more turns increase emf),

  • Rate of change of magnetic flux dΦ/dtd\Phi/dt,

  • Area of the coil AA, since flux depends on area.
    Mathematically:

E=NdΦdt=Nd(B⋅Acos⁡θ)dt\mathcal{E} = N \frac{d\Phi}{dt} = N \frac{d(B \cdot A \cos \theta)}{dt}

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