A current through a horizontal power line flows in east to west direction. What is the direction of magnetic field at a point directly below it and at a point directly above it?

 

Answer

To find Magnetic Field, we will use the Right Hand Thumb Rule.

 

Now,

  • Since current flows from East to West, pointing out thumb towards West
  • If we curl our fingers, that will show direction of magnetic field

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example-13.1---magnetic-effects-class-10---answer-by-teachoo.png

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So, for a point directly above wire, magnetic field is into the paper

and for a point directly below wire, magnetic field is out of the paper

  1. Class 10
  2. Chapter 13 Class 10 - Magnetic Effects of Electric Current (Term 2)

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Class 10
Chapter 13 Class 10 - Magnetic Effects of Electric Current (Term 2)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo