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Physics · Unit 3 · Electromagnetism · Electrostatics

Describe the force experienced by electric current-carrying conductors and moving electric charges when placed in a magnetic field.

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Question 1

A rectangular conductor loop of dimensions 0.50 m × 0.30 m is positioned perpendicular to a uniform magnetic field of strength 0.85 T. A current of 2.4 A flows through the loop. (a) Describe the direction and nature of the force experienced by the sides of the loop that carry current parallel to the magnetic field lines. (2 marks) (b) Describe how the force on the current-carrying sides perpendicular to the magnetic field would change if the magnetic field strength were doubled and the current were halved. (2 marks)

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Question 2

A proton enters a region of uniform magnetic field directed into the page. The proton is moving horizontally to the right. In which direction will the proton be deflected?

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Question 3

A student investigates the force on a current-carrying conductor and a moving charged particle, both placed in the same uniform magnetic field of strength 0.45 T directed into the page. Refer to the scenario described below. Describe the differences in how the force is experienced by the current-carrying conductor compared to the moving charged particle.

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