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The magnetic field perpendicular to a circular wire loop 12.0 cm in diameter is changed
Chapter 21, Problem 11P(choose chapter or problem)
Problem 11P
The magnetic field perpendicular to a circular wire loop 12.0 cm in diameter is changed from +0.52 T to –0.45 T in 180 ms, where + means the field points away from an observer and – toward the observer, (a) Calculate the induced emf. (b) In what direction does the induced current flow?
Questions & Answers
QUESTION:
Problem 11P
The magnetic field perpendicular to a circular wire loop 12.0 cm in diameter is changed from +0.52 T to –0.45 T in 180 ms, where + means the field points away from an observer and – toward the observer, (a) Calculate the induced emf. (b) In what direction does the induced current flow?
ANSWER:
Solution 11P
a.)
Step 1 of 3
We have to calculate the induced emf in the circular wire loop.
The induced emf in the circular wire loop can be calculated using the expression,
where,
Area of the circular loop in m2
magnitude of change in the
Magnetic field in T
s = 0.18 s