alleryStart learning →A 200 g wire, 1.5 m long, hangs in a horizontal field when 2 A flows (g = 9.8). B is
A0.65 T
B0.33 T
C0.13 T
D1.3 T
Answer & Solution
Correct answer: A. 0.65 T
Balancing I l B with mg gives B = 0.2 x 9.8/(2 x 1.5) = 0.65 T.
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