Question: A 135 m long transmission wire is stretched between two vertical posts. It carries of a current of 45.5 A and experiences a force of

A 135 m long transmission wire is stretched between two vertical posts. It carries of a current of 45.5 A and experiences a force of 0.45 N due to Earth's magnetic field. What is the value of Earth's magnetic field at the location of the wire 80 with it?

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