Problem 7. (4 points) This is NOT a multiple-choice problem! Sliding-bar apparat

Question

Problem 7. (4 points) This is NOT a multiple-choice problem! Sliding-bar apparatus on a loop. A conducting rod of length l- 35 cm is free to slide on two parallel conducting bars as shown in Fig. 6. Two resistors R1-7 and R2-14 are connected across the ends of the bars to form a loop. A constant magnetic field B 2.5 T is directed perpendicularly into the page. An external agent pulls the rod to the left with a constant speed of v - 8 m/s. Find the currents in both resistors Answer: /1 - each answer) A (current on Ri) and 2- A (current on R2). (Note: 2 points in Figure 6. Sliding-bar apparatus on a loop

Explanation / Answer

induced emf = Bvl = 2.8*8*0.35 = 7.84 volt

if we assume induced emf is battery than R1 and R2 are connected parallel with battery

current throught R1 = 7.84*(14)/(7*14) = 1.12 amp

current throught R2 = 7.84*(7)/(7*14) = 0.56 amp

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