Question

A long straight wire carrying a current of 2.03 A moves with a constant speed v to the right. A 120 turn circular coil of diameter 1.50 cm, and resistance of 3.25 u 2, lies stationary in the same plane as the straight wire. At some initial time the wire is to the left of the coil at a distance d = 13.0 cm from its center. 5.00 s later, the wire has moved to the right of the coil and is at a distance d from the center of the coil. You may assume for simplicity that the magnetic field is uniform in the region of the coil. Initial situation Final situation (a) What is the direction of the induced current in the coil as the wire moves toward the coil, in the initial situation? clockwise counterclockwise O no current (b) What is the direction of the induced current in the coil as the wire moves away from coil, in the final situation? clockwise counterclockwise O no current (c) What is the magnitude of the average induced current in the coil over the 5.00 s interval? 6.12 x What is the change in magnetic flux inside the coil due to the straight wire? How does Faraday's law relate this change in flux to the induced emf? mA

Answer 1

atid 2nd I Initial magnetie field-B, B = fo I cout of page) final magnetie field - 2 B2 -- fo I c into the page) E= -0 =- (B₂ - B) NA = -(tho I had to l) x 120 x 1752 - at - YTX10 X2.03 x 120x TX 0.0752 TC0.13) XS — 1.249 x10-6 X 120 XT X0.0752 = 2,649 X60-8 v. I= e = 2.649 X108 2 3.25 XIgor - Ho I At HoI 2nd X 120 XT X 0.0752 I = 8.15 mA