PHY 221 Lab: EM induction Five loops are formed of copper wire of the same cross
ID: 2032446 • Letter: P
Question
PHY 221 Lab: EM induction Five loops are formed of copper wire of the same cross- sectional area. Loops 1-4 are identical; loop 5 has the same B. le.?? ol height as the others but is longer. At the instant shown, allB the loops are moving at the same speed in the directions l o o indicated There is a uniform magnetic field pointing out of the page in Region I: in Region II there is no magnetic field. Ignore any interactions between the loops 1· Through which loops, ifany, is the magnetic flux changing? Explain. lo o Region I Region II For each loop that has an induced current, determine whether the induced current is clockwise or counterclockwise around the loop. Clearly indicate your answers on the diagram at right. Explain how you can use Faraday's law to support your answers. 2.
Explanation / Answer
1) 1 ,4 , 5
2) 1 counter clockwise flux is decreasing
2 no induced current flux is not changing
3 no induced current flux is not changing
4 clockwise current flux is increasing
5 clockwise current flux is increasing
according to faraday induced current will be in a direction so that it oppose the cause it was induced by . direction of induced magnetic field will be opposite of increasing flux.
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