Question

Two protons move parallel to each other with speed v₁ and v₂. Net force between them​

Answer 1

Answer:

The force of magnetic induction is given by

Fmag=e(v×B);B=2πμ0r3e(v×r)

∴Fmag=2πμ0×r3e2[v×(v×r)]

                   =2πμ0×r3e2[(v.r)×v−(v.v)×r

hence answer is 1

Explanation:

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