16 Two parallel wires, 4cm apart, carry currents of 2A and 4A, respectively, in the same direction. The force per unit length in N/m of one wire on the other is
(A)1.0×10⁻³, repulsive
(B)1.0×10⁻³, attractive
(C)4.0×10⁻⁵, repulsive
(D)4.0×10⁻⁵, attractive
(E)none of these

相關試題

相關試卷