Based on the emf value measured at frame 700, what is the average magnitude of the magnetic field inside the magnet assembly? Note that the loop has 10 turns; in other words, the total emf is the sum of the emf’s generated in each turn. In your calculations, use 26 mV for the magnitude of the total induced emf and 0.060 m/s for the speed of the loop.

The average magnitude of magnetic field B= 0.0433/ d Tesla

(You have not provided length of side of loop, so if you divide this value by length you will get value of magnetic field.)

Explanation:

Induced emf

where B= magnetic field  

d= breadth of rectangular piece

V= velocity with which the rectangular piece = o.o6m/s

n= no of turns  = 10

EMF = 26mV

since d (breadth of the frame) is not given, I will use it as a variable

EMF= n×B×d×V (1) (EMF induced due to multiple turns)

From eq 1, we get

B= (EMF)/(n d V)

B= (26 X 0.001) / (10 d 0.06)

B= 0.0433/ d Tesla

thermal energy is the answer