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Question 1 of 5
1. Question
What is the field generated by a wire with 10 A of current flowing through it, when you stand 1 cm away from it?
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Question 2 of 5
2. Question
What is the force per unit length exerted by a wire 1, through which a current of 1 A flows, on a wire 2, through which 3 A flows, located 10 cm from the first?
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Question 3 of 5
3. Question
A long solenoid is wound so that it has 1000 turns per meter. If the magnetic field at its center is 0.15 T, what is the current in the solenoid?
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Question 4 of 5
4. Question
What must be the value of the current flowing through a circular loop 10 cm in diameter for the magnetic field at its center to have the same modulus as the Earth's magnetic field (0.8 G)?
ExactInexactIndex
Note that the field is in Gauss, not Tesla! What's more, a loop is like a solenoid with only one turn. We therefore take N = 1.
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Question 5 of 5
5. Question
Let's consider three long conducting wires, passing through the vertices of a 5 cm equilateral triangle. A current of 5 A flows through all of them, along the negative z axis (i.e. represented by a cross, entering the sheet). What is the magnitude of the force per unit length experienced by the wire of your choice?
ExactInexactIndex
Take the time to represent the problem clearly. Then you can solve it using vector calculus (i.e. expressing F/L with i and j).