A ક્ષેત્રફળ અને N આંટા ધરાવતી એક ગૂંચળી \(\vec{B}\) ને લંબ અક્ષને અનુલક્ષીને, સમાન ચુંબકીય ક્ષેત્ર \(\vec{B}\) માં \(\omega\) કોણીય વેગથી ભ્રમણ કરે છે. જ્યારે \(\vec{B}\) ગૂંચળીના સમતલને સમાંતર હોય, ત્યારે તે ક્ષણે તેમાં ઉદ્ભવતું ચુંબકીય ફ્લક્સ \(\varphi\) અને પ્રેરિત \(\operatorname{emf} \varepsilon\) શોધો :

A \(\varphi=\mathrm{AB}, \varepsilon=0\)
B \(\varphi=0, \varepsilon=0\)
C \(\varphi=0, \varepsilon=\mathrm{NAB} \omega\)
D \(\varphi=\mathrm{AB}, \varepsilon=\mathrm{NAB} \omega\)

Verified Solution

Answer & Solution

Correct Answer

(C) \(\varphi=0, \varepsilon=\mathrm{NAB} \omega\)

Step-by-step Solution

Detailed explanation

\(\begin{aligned} \phi & =\mathrm{BAN} \cdot \cos (\omega \mathrm{t}) \\ \varepsilon & =\frac{-\mathrm{d} \phi}{\mathrm{dt}}=\mathrm{BA} \omega \mathrm{~N} \cdot \sin (\omega \mathrm{t}) \end{aligned}\) જ્યારે B સમતલને સમાંતર હોય,…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From JEE Mains

Explore more questions on app