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A Rod of Length L and Electrical Resistance R Moves

Question 63

Multiple Choice

A rod of length L and electrical resistance R moves through a constant uniform magnetic field A rod of length L and electrical resistance R moves through a constant uniform magnetic field perpendicular to the rod. The force that must be applied by a person to keep the rod moving with constant velocity is: A) 0 B) BLv C) BLv/R D) B<sup>2</sup>L<sup>2</sup>v/R E) B<sup>2</sup>L<sup>2</sup>v<sup>2</sup>/R perpendicular to the rod. The force that must be applied by a person to keep the rod moving with constant velocity A rod of length L and electrical resistance R moves through a constant uniform magnetic field perpendicular to the rod. The force that must be applied by a person to keep the rod moving with constant velocity is: A) 0 B) BLv C) BLv/R D) B<sup>2</sup>L<sup>2</sup>v/R E) B<sup>2</sup>L<sup>2</sup>v<sup>2</sup>/R is:


A) 0
B) BLv
C) BLv/R
D) B2L2v/R
E) B2L2v2/R

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