Description: Multi-Version Exercise 28.85 The loop shown in the figure is carryi
ID: 2298204 • Letter: D
Question
Description: Multi-Version Exercise 28.85
The loop shown in the figure is carrying a current of 2.343A, and the distance r=2.775m. What is the magnitude of the magnetic field at point P inside the loop?
Please include a multiplication sign (*) to indicate that two units are being multiplied.
B=[Num] [Units]
The loop shown in the figure is carrying a current of 2.343A, and the distance r=2.775m. What is the magnitude of the magnetic field at point P inside the loop?
Please include a multiplication sign (*) to indicate that two units are being multiplied.
B=[Num] [Units]
Explanation / Answer
Bnet = B1 + B2 +B3
B1 is due to 3r wire B = -u0i/4(3r)
B2 is due to 2r wire = -u0i/4(2r)
B3 is to r = B3 = - uoi(4(r)
so Bnet = -(u0i/r) (1/12 +1/8 +1/4)
Bnet = - 4pi*10^-7 *2.343/2.775)(0.458)
Bnet = -4.86*10^-7 T