Problem 7. (4 points) This is NOT a multiple-choice problem! Sliding-bar apparat
ID: 1783444 • Letter: P
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 Ohms and R2 = 14 Ohms 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: I1 = ________ A (current on R1) and I2 = __________ A (current on R2).
R2 Figure 6. Sliding-bar apparatus on a loop.Explanation / Answer
Emf induced=Blv
Putting values
Emf=V=7 volts
Both resistance are in parallel so
I1=V/R1=1 A
I2=V/R2=0.5 A