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STD 12 -6. Electromagnetic induction — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 -6. Electromagnetic induction4 Marks
Question
A conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An $emf$ is induced in the loop if

$(a)$  It is translated (inside the field)
$(b)$  It is rotated about its axis
$(c)$  It is rotated about a diameter
$(d)$  It is deformed

✓

Answer

The $EMF$ induced in a loop is given as $E M F=-\frac{d \phi}{d t}$

Hence a change in flux through the loop is necessary for emf induction, which

happens only in case of options $C$ and $D.$

Hence correct answers are options $\mathrm{C}$ and $\mathrm{D}$.

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