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(A) When two current-carrying wires are placed parallel to each other,the magnetic force between them depends on the direction of the current.$1$. Whe

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Attraction force when in parallel and repulsion force when in series

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(A) When two current-carrying wires are placed parallel to each other,the magnetic force between them depends on the direction of the current.$1$. When the wires are connected in parallel,the current flows in the same direction in both wires. According to Ampere's law,currents flowing in the same direction attract each other.$2$. When the wires are connected in series,the current flows in opposite directions in the two wires. Currents flowing in opposite directions repel each other.Therefore,there is an attraction force when in parallel and a repulsion force when in series.

Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases,which type of force acts between the two wires?

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