An unusual lightning strike has a vertical portion with a positive current of +400 A upwards. The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 µT. In N, the force exerted by the Earth's magnetic field on the 20 m long current is Select one: a. 0.12 N WEST b. 0.24 N WWEST C. 0.3 N WEST d. 0.18 N VWEST

An unusual lightning strike has a vertical portion with a positive current of +400 A upwards. The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 µT. In N, the force exerted by the Earth's magnetic field on the 20 m long current is Select one: a. 0.12 N WEST b. 0.24 N WWEST C. 0.3 N WEST d. 0.18 N VWEST

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter24: Magnetic Fields

Section: Chapter Questions

Problem 73A

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