The magnetic field around a straight current-carrying wire forms concentric circles, and the right-hand thumb rule helps: point your thumb in the current's direction, your curled fingers show the field's direction. But yaar, I remember it because of the old barbed wire fence around our orchard—when I fix a break, I imagine current running along it, and my muddy hand makes the rule real. So for me, it’s not just diagrams; it’s that wire keeping the monkeys out.
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