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3 cards from this section. Quick, good the night before a test.
Define torque in the context of a current loop.
Think about the effect of forces on an object that cause rotation.
What happens to the torque when the angle between the loop's plane and the magnetic field is 90 degrees?
Consider the sine function's value at this angle.
What does the torque on a rectangular current loop depend on?
Remember the formula τ = IABsinθ.
True or False: The torque on a current loop is maximum when the plane of the loop is parallel to the magnetic field.
Visualize how the loop behaves in the magnetic field.
A rectangular coil with dimensions 0.2 m x 0.1 m carries a current of 4 A and is placed in a magnetic field of 0.3 T. Calculate the torque when it's inclined at an angle of 60 degrees.
Make sure to convert the angle to radians if needed.
If the same coil is rotated from 0 degrees to 90 degrees, how does the torque change and why?
Consider the characteristics of the sine function during this range.
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