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Current carrying coil placed in a magnetic field

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A uniform rectangular coil of total mass 270 g and dimensions 0.5m x 1.0m is oriented perpendicular to a uniform 3.90-T magnetic field (the figure). A current of 2.30 A is suddenly started in the coil.

Find the initial angular acceleration of the coil just after the current is started (rad/s^2).

See document attached for figure.

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Step by step solution provided explaining how to determine the initial angular acceleration of a coil in a magnetic field.

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A uniform rectangular coil of total mass 270 g and dimensions 0.5m x 1.0m is oriented perpendicular to a uniform 3.90-T magnetic field (the figure). A current of 2.30 A is suddenly started in the coil.

Find the initial angular acceleration of the coil just after the current is started (rad/s^2).

Solution:
A1

B
1m
D C

0.5m A2 ...

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