Two parallel wires each carry current I in the directions as shown. Which of the
ID: 1558627 • Letter: T
Question
Two parallel wires each carry current 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 are 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 field 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 out of 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) Option D is true
Note that two wires carrying current in the same direction attract each other, and theyrepel if the currents are opposite in direction.
7) Option A is correct
Use right hand rule, If magnetic field direction is represented by thumb and which is directed out of the page, then curled finger represent the direction of induced current, which is counterclockwise. so option A
8) Option A is true.
He unified electricity and magnetism called electromagnetism
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