Question

stion 8 of 18 A 09 An L = 43.0 cm wire is moving to the right at a speed of v = 8.10 m/s across two parallel wire rails that are connected on the left sido, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field that has a magnitude of B = 0.950 T and is directed into the screen. What is the emf induced in the wire? E- V The induced emf causes a current to flow in the circuit formed by the moving wire and the rails. In which direction does the current flow around the circuit? clockwise counterclockwise If the moving wire and the rails have a combined total resistance of 1.55 , what applied force F would be required to keep the wire moving at the given velocity? Assume that there is no friction between the moving wire and the rails. N F MacBook Air 4 Ong 80 * A :1 & 7 $ 4 9 0 % 5 8 6 P - 0 Y U E T R

Answer 1

Given L: 43 cm = 0.43m 10=8.10m/s B=0.950 T The induced enf (&) is {= BUL E = 0.9588.140.43 >€ = 3.308 V the induced ccerrest According to tenz's law directed in such a way that it opposes where it produced Hence the induced ccerrent should be oppose the magnetic field direction woceld Honce induced Ccerent direction be Counterclockwise NOW R = 1.552 The force FFI LB Sino I Here { R 3.308 1.55 2.134 A 0= goo so F = 2.13480.43 x 0.95 = F = 0.872 N