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Question

A vertical rod of length l is moved with constant velocity v towards east. The vertical component of the earth's magnetic field is B and angle of dip is θ. The emf induced in the rod is

l लम्बाई की एक उर्ध्वाधर छड़ को नियत वेग v से पूर्व की ओर गति करायी जाती है। पृथ्वी के चुम्बकीय क्षेत्र का ऊर्ध्वाधर घटक B है तथा नति कोण θ है। छड़ में प्रेरित वि.वा.ब. है

A
Blv
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B
Blv cotθ
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C
Blv sinθ
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D
Blv cosθ
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