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How to Find a Magnet’s North and South Poles - Explained by Neil deGrasse Tyson #physics #science
In this mind-bending clip, astrophysicist Neil deGrasse Tyson reveals that "North" and "South" on a magnet are actually just arbitrary human labels, not cosmic rules. He explains that we define a magnet’s "North" pole simply as the end that points toward the Arctic, but since opposite poles attract, that actually makes Earth’s geographic ...
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A conductor of length 0.04 m is tangentially connected to a circular loop of radius 0.03 m perpendicular to its plane. Find the magnetic field induction at the centre of the loop, if 4 A current is passed through the conductor as shown in figure.
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