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Applying the theory of the ‘Right Hand Rule’, a longitudinal surface defect in a round bar is detected by ‘current passing in a direction parallel to the direction of expected defects’ because:

Correct Answer: The magnetic field is at right angles to the defect

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Non Destructive Testing and Evaluation MCQ: Applying the theory of the ‘Right Hand Rule’, a longitudinal surface defect in a round bar is detected by ‘current passing in a direction parallel to the direction of expected defects’ because: | Extra Education