Acurrent in a wire increases from 2 a to 6 a. how will the magnetic field 0.01 m from the wire change?
it increases to four times its original value.
it increases to three times its original value.
it decreases to one-fourth its original value.
it decreases to one-third its original value.
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Acurrent in a wire increases from 2 a to 6 a. how will the magnetic field 0.01 m from the wire chang...
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