Copper wire loops are placed in different external magnetic fields, as represent
ID: 2264574 • Letter: C
Question
Copper wire loops are placed in different external magnetic fields, as represented by the magnetic field lines shown. Loops A and B are identical, Loop C is identical except for a small cut in it as shown.
THE LOOPS ARE STATIONARY. THE MAGNETIC FIELD IS NOT CHANGING WITH TIME
A) For each loop, state whether or not there is an induced emf. Explain and justify your answer.
B) For each loop, state whether or not there is an induced current. If there is an induced current, indicate the direction of current.
SOMETIME LATER, THE LOOPS ARE MOVING TO THE LEFT
C) For each loop, state whether or not there is an induced emf. Explain and justify your answer.
D) For each loop, state whether or not there is an induced current. If there is an induced current, indicate the direction of current.
Copper wire loops are placed in different external magnetic fields, as represented by the magnetic field lines shown. Loops A and B are identical, Loop C is identical except for a small cut in it as shown. For each loop, state whether or not there is an induced emf. Explain and justify your answer. For each loop, state whether or not there is an induced current. If there is an induced current, indicate the direction of current. For each loop, state whether or not there is an induced emf. Explain and justify your answer. For each loop, state whether or not there is an induced current. If there is an induced current, indicate the direction of current.Explanation / Answer
a. as long as loops as not in motion and field is at rest, there is no induced emf. only relative motion of these two creates emf. that means either one of these or both must be in mition to create emf, this is evident from Faradays law of em induction
b. induced currrent = induced emf/R as there is no emf, no current
c. now there will be induced emf , becoz one of the body is subjection to motion.
and its direction is always opposite to the one which caused it, this is evident from lenz law
d. yes, as there is emf, now we get induced current