\(600\) फेरों वाली \(70 \mathrm{~cm}^2\) क्षेत्रफल की एक वर्गाकार कुण्डली \(0.4 \ \mathrm{wbm}^{-2}\) के चुम्बकीय क्षेत्र के लम्बवत् एक अक्ष के परितः घूर्णन करती है जो कुण्डली की एक भुजा के समान्तर है। यदि कुण्डली एक मिनट में 500 परिक्रमा करती है, जब कुण्डली का तल क्षेत्र से \(60^{\circ}\) पर झुकी हो तो क्षणिक विद्युत वाहक बल_______  \(\mathrm{V}\) होगा। \(\left(\pi=\frac{22}{7}\right)\)

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.