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Q18 Two parallel wires carry currents. The top wire carries a current to the lef

ID: 1538145 • Letter: Q

Question

Q18

Two parallel wires carry currents. The top wire carries a current to the left, and the bottom wire carries a current to the left, and the bottom wire carries a current to the right, as shown, the 10 A current produces a magnitude field B_10 at the location of the 20 A wire. The direction of B_10 the force on the 20 A wire that is produces are B_10 is into the page; the force on the 20 A wire is towards the bottom of the page. B_10 is into the page; the force on the 20 A wire is towards the top of the page. B_10 is into the page; the force on the 20 A wire is towards the bottom of the page. B_10 is into the page; the force on the 20 A wire is towards the top of the page. B_10 is towards the bottom of the page; the force on the 20 A wire is towards the bottom of the page.

Explanation / Answer

using right hand thumb rule,

field due to 10 A at the location of 20 A wire will be out of the page.

as current in the wires are in different direction,

magnetic force is repulsive in nature

hence force is towards the bottom of the page

hence option c is correct.