Multiple Choice
Two parallel straight wires are 7.0 cm apart and 50 m long.Each one carries a 18-A current in the same direction.One wire is securely anchored,and the other is attached in the center to a movable cart.If the force needed to move the wire when it is not attached to the cart is negligible,with what magnitude force does the wire pull on the cart? (μ0 = 4π × 10-7 T ∙ m/A)
A) 46 mN
B) 37 mN
C) 66 mN
D) 93 mN
Correct Answer:
Verified
Correct Answer:
Verified
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