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in Physics by (121k points)
r दुरी पर स्थित दो बिंदु आवेशों `+q` तथा `-q` के बीच बल `vecF` हैं। यदि एक आवेश स्थिर हो तथा दूसरा उसके चारों और r त्रिज्या के वृत्त में चक्क्र काटे तो एक चक्क्र लगाने में गतिमान आवेश पर कृत कार्य होगा-
A. Fr
B. `F.2pir`
C. `F/(2pir)`
D. शून्य

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