Q.5. Show two long straight wires carrying electric current of 10 A each in opposite directions. The separation between the wires is 5.0 cm. Find a magnetic field at a point P midway between the wires.

Dear student,

magnetic field due to a straight conductorB=μo2πirHere B'= B1+B2( As thecurrents are in opposite directions)So B' =2BB'=2μo2π102.5×10-2B'=4π×10-5×4πB'=16×10-5T

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