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  3. How will you find the direction of magnetic field due to a straight conductor-carrying current? Define the principle involved

. How will you find the direction of magnetic field due to a straight conductor-carrying current? Define the principle involved

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Ans: To find the direction of magnetic field due to a straight conductor-carrying current, we use the Right-Hand thumb rule. Imagine the straight conductor in your right hand such that the thumb points in the direction of current. The direction of curling of fingers of the right hand gives the direction of magnetic field lines

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