A current balance is a device to measure magnetic forces. It is constructed from two parallel coils, each with an average radius of 12.5 cm. The lower coil rests on a balance; it has 20 turns and carries a constant current of 3.10 A. The upper coil, suspended 0.314 cm above the lower coil, has 50 turns and a current that can be varied. The reading of the balance changes as the magnetic force on the lower coil changes. What current is needed in the upper coil to exert a force of 1.50 N on the bottom coil? 6:00 Ammeter Variable de Wire wrapped - around disk circumference power supply 0.314 cm 50 turns 20 turns dc power supply Plate on which Stand with clamp lower coil rests Triple beam balance to weigh lower coil to support upper coil A

A current balance is a device to measure magnetic forces. It is constructed from two parallel coils, each with an average radius of 12.5 cm. The lower coil rests on a balance; it has 20 turns and carries a constant current of 3.10 A. The upper coil, suspended 0.314 cm above the lower coil, has 50 turns and a current that can be varied. The reading of the balance changes as the magnetic force on the lower coil changes. What current is needed in the upper coil to exert a force of 1.50 N on the bottom coil? 6:00 Ammeter Variable de Wire wrapped - around disk circumference power supply 0.314 cm 50 turns 20 turns dc power supply Plate on which Stand with clamp lower coil rests Triple beam balance to weigh lower coil to support upper coil A

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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