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Question
Two parallel wires carrying currents in the same direction attract each other because of
Two parallel wires carrying currents in the same direction attract each other because of
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Solution
The correct option is B magnetic forces between them
Let wire on RHS carry current vertically upwards and wire on LHS carries current vertically upwards then the direction of magnetic field at a position where RHS wire is there due to LHS wire is inside the plane. Now RHS wire is a current carrying conductor placed in a magnetic field due to LHS wire. Similarly LHS wire is a current carrying conductor placed in a magnetic field due to RHS wire. Therefore, they both will experience force.
Now in RHS wire current is vertically upwards and direction of magnetic field is inside the plane. Since direction of force is given by F=→dl×→B therefore, force acting on RHS wire is towards left and by applying similar method we find that force acting on LHS wire is towards right. Therefore, they both attract each other and the cause is magnet forces acting between them.
Let wire on RHS carry current vertically upwards and wire on LHS carries current vertically upwards then the direction of magnetic field at a position where RHS wire is there due to LHS wire is inside the plane. Now RHS wire is a current carrying conductor placed in a magnetic field due to LHS wire. Similarly LHS wire is a current carrying conductor placed in a magnetic field due to RHS wire. Therefore, they both will experience force.
Now in RHS wire current is vertically upwards and direction of magnetic field is inside the plane. Since direction of force is given by F=→dl×→B therefore, force acting on RHS wire is towards left and by applying similar method we find that force acting on LHS wire is towards right. Therefore, they both attract each other and the cause is magnet forces acting between them.
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