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What does the direction of thumb indicate in the right-hand thumb rule? In what way this rule is different from Fleming’s left-hand rule?

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Solution:
Right hand thumb rule is used to find out magnetic field due to a current carrying wire in the vicinity of the wire.
The Thumb must be along the current carrying wire and fingers are curled in the direction of magnetic field produced by this wire.
While Fleming’s left hand rule is used to find out force on a current carrying wire, present in magnetic field.

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