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Integrated Concepts (a) What is the direction of the force

Chapter 22, Problem 83

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QUESTION:

Problem 83PE

Integrated Concepts (a) What is the direction of the force on a wire carrying a current due east in a location where the Earth’s field is due north? Both are parallel to the ground. (b) Calculate the force per meter if the wire carries 20.0 A and the field strength is 3.00×10−5 T . (c) What diameter copper wire would have its weight supported by this force? (d) Calculate the resistance per meter and the voltage per meter needed.

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QUESTION:

Problem 83PE

Integrated Concepts (a) What is the direction of the force on a wire carrying a current due east in a location where the Earth’s field is due north? Both are parallel to the ground. (b) Calculate the force per meter if the wire carries 20.0 A and the field strength is 3.00×10−5 T . (c) What diameter copper wire would have its weight supported by this force? (d) Calculate the resistance per meter and the voltage per meter needed.

ANSWER:

Solution 83PE

a.) The direction of the magnetic force can be determined by the right hand rule-1.

According to this rule for a positive moving charge, right thumb is in the direction of velocity, fingers point in the direction of magnetic field and palm points in the direction of magnetic force.

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