04_11_Torque_Wires

04_11_Torque_Wires - Today4/11 o Current Loops o Phantom...

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Today4/11 o Current Loops o “Phantom” magnets o Force/torque on loops in a B-field o B-Field due to many wires o HW: 4/11 “Torque on Loops” Due Wednesday, 4/16 o Magnetism HW delayed till Monday 4/14 I will go over it today o Force on Loops and Torque on loops both due on Wednesday 4/16
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Magnetic Torque, Loops What happens to loop? Turn the loop into a magnet. Magnets line up with the field. (A compass needle is a magnet!) Loop is a magnet (needle) centered in the loop with the N pole facing away from you. S The loop (magnet) will rotate so it lines up with the field. (S up and out of the page)
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Magnetic Torque, Loops What happens to loop? S N The loop (magnet) will rotate so it lines up with the field. (S up and out of the page) Turn the loop into a magnet. Magnets line up with the field. (A compass needle is a magnet!) Loop is a magnet (needle) centered in the loop with the N pole facing away from you. This is a torque on the loop.
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N S N S N S N S A bar magnet and current loop (powered by a battery) are shown in various orientations below.
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04_11_Torque_Wires - Today4/11 o Current Loops o Phantom...

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