Two like magnetic poles of strength 10 Am and 40 Am are separated by a distance 30 cm. The intensity of magnetic field is zero on the line joining them:
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the magnetic field is zero at point P which lies at a distance x from the magnetic pole having pole strength of 10 Am.
Therefore, from the stronger pole distance of the null point is 20 cm
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Magnetic lines of force: