5. A student performs on experiment to study the magnetic effect of current around a current
carrying conductor with the help of a magnetic compass. He reports that
i) The degree of deflection of the magnetic compass increases when the compass is
moved away from the conductor
ii) The degree of deflection of the magnetic compass increases when the current
through the conductor is increased
Which of the above observations of the student appears to be wrong and why?
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Answer:
his first observation is wrong
because magnetic feild is inversli proportional to square of the distance
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