A horizontal overhead powerline is at a height of 4m from the ground and carries a…
Physics · JEE Main · NTA Exams — Magnetic Effects of Current and Magnetism
A horizontal overhead powerline is at a height of 4m from the ground and carries a current of 100 A from east to west. The magnetic field directly below it on the ground is (µ0 = 4π × 10–7 TmA–1)
- 2.5 × 10–7 T, southward
- 5 × 10–6 T, northward
- 5 × 10–6 T, southward
- 2.5 × 10–7 T, northward
Answer
(C) 5 × 10 –6 T, southward
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