Two parallel wires carry I in the directions as shown. Which of the following is

Question

Two parallel wires carry I in the directions as shown. Which of the following is a true statement? A) The two wires are attracted to each other. B) The two wires arc unaffected by each other. C) The magnetic fields generated by the currents cancel everywhere surrounding the two wires. D) The two wires repel each other. E) The net magnetic Held due to the two wires is uniform everywhere. A conducting loop is formed by running a wire completely around the edge of this page. A uniform magnetic field directed into the page is increasing at the rate of 2.5 T/s. What is the direction of the current induced in the loop? A) The induced current will move counterclockwise around the edge of the page. B) The induced current will alternate between clockwise and counterclockwise. C) The induced current will move clockwise around the edge of the page. D) No current will be induced because the loop and field do not have the right orientation.

Explanation / Answer

6. Parallel wires carrying current in same direction attracts each other.

Ans (A)

{ due to upper wire, field at the location of lower will be out of page.

F = IL X B

IL -> -i and B -> k

F = -i x k = - (-j) = j that is upward towards the upper wire}

7. field is into the page and increasing hence induced current will like that field due to induced current will be out of page .

so current will be counterclock wise.

Ans(C)

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