Question

Q2. (12 p) The diagram shows a wire carrying current 11 and a loop carrying current 12. Side of the loop has length L. The distance between the wire and left edge of the loop is R1, and the distance between the wire and right edge of the loop is R2. a. What is the magnitude and direction of the magnetic field B produced by the wire at distancer, on the right side of the wire (in the region where the loop is)? (2p) b. What is the force acting on the left edge of the loop? (2p) c. What is the force acting on the right edge of the loop? (2p) d. Explain what is the total force acting on the top and bottom edges of the loop? (4p) Hint: look at two small pieces of wire on the top and bottom edge of the loop, both r away from the wire. What are the forces acting on them? Look at magnitude and direction. e. What is the net force acting on the loop and in which direction will the loop move if you let it go from the initial position shown in the diagram? (2p) Length 1 Loop with current Wire, current 11 Remember that the force has magnitude and direction.

Answer 1

Amperian loop loop of readius te, consider an amperian form Ampere's lan, & Bids a holen → Bxante - Mol, * ß = MI, фик Direction into the page (6) F = BIL = to f, I L AIR, rc Fe = BIL = Mol, Iz L 24 (R+L) - fo I, I2. L TR (d) Force is upward on the top edgee. and downward on the bottom edge, Both forces are equal, so net force = o. (e) force on left edge is towards left and that on right edge in towards right but F. FR , so the loop will move to the left.

Fuer = F - FR 122L R, hot Lab 20R2 - No .5- 40 . L - स

Answer 2

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