Write the sentence as a conditional statement two parallel lines lie in the same plane a. if two lines lie in the same plane, then the lines are parallel b. if two lines are parallel, then the lines lie in the same planecorrect answer is b.

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).

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