Two long, parallel wires each carry current in the same direction, placed close

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1. Two long, parallel wires each carry current in the same direction, placed close together. What happens between them?

The wires attract each other

The wires repel each other

No force acts between the wires at all

A force appears only at the instant current switches on or off

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Currents flowing in the same direction through nearby parallel wires attract each other, while currents flowing in opposite directions repel — a direct consequence of each wire’s own magnetic field.