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The following questions are based on the animation in the link above. 1. Careful

ID: 1427310 • Letter: T

Question

The following questions are based on the animation in the link above.

1. Carefully move the wire loop verticaly up inside the animation box. Be careful not to move it left or right as you are moving upward. What kind of voltage is induced in the wire loop?

Zero

Positive

Negative

2. Explain why this is the case.

3. Carefully move the wire loop verticaly down inside the animation box. Be careful not to move it left or right as you are moving downward. What kind of voltage is induced in the wire loop?

Zero

Positive

Negative

4. Explain why this is the case.

5. Now start with the wire loop on the far right side of the animation box. Slowly and steadily move it horizontally to the left, but do not pass over the green wire. What kind of voltage is induced in the wire loop?

Zero

Positive

Negative

6. Explain why this is the case.

7. Now start with the wire loop just to the right of the green wire. Slowly and steadily move it horizontally to the right. What kind of voltage is induced in the wire loop?

Zero

Positive

Negative

8. Explain why this is the case.

9. Now start with the wire loop on the far left side of the animation. Slowly and steadily move it horizontally all the way to the right side of the animation passing over the green wire. Try to move the wire loop at a constant speed all the way accross. (For this part you may want to start when the voltage starts graphing on the left side and then pause the animation when you are finished, so you can answer the next several questions) What kind of voltage is induced in the wire loop?

Positive, zero, negative

Positive, negative, positive

Negative, positive, negative

Negative, zero, negative

Negative, zero, positive

10. As the loop approaches the green wire, but before it crosses over it, what happens to the induced voltage?

It remains zero

It remains a constant non-zero value

It increases linearly

In increases exponentially

11. What direction is the magnetic field produced by the green wire pointing in the region to the right of the green wire?

Up

Down

Left

right

Into the screen

Out of the screen

12. Explain how you calculated the above answer.

13. What direction is the magnetic field produced by the green wire pointing in the region to the left of the green wire?

Up

Down

Left

right

Into the screen

Out of the screen

14. Explain how you calculated the above answer.

15. Which direction is the current in the green wire flowing?

Up

Down

16. Explain how you calculated the above answer.

Explanation / Answer

1 )   voltage is induced in the wire loop - zero    .  

2)    As, there is no change in magnetic flux .

3)   voltage is induced in the wire loop    - zero   .  

4)    As, there is no change in magnetic flux .

5)     voltage is induced in the wire loop - negative

6)    As, the magnetic flux   is decreasing .

7)   voltage is induced in the wire loop - positive

8)    As, the magnetic flux   is increasing .

9) voltage is induced in the wire loop -   Negative, zero, positive

10)    induced voltage -   It increases exponentially

11)   direction is the magnetic field produced by the green -   Into the screen

12)    By right hand   rule direction of magnetic field is Into the screen .

13)    direction is the magnetic field produced by the green wire - Out of the screen

14)     By right hand   rule direction of magnetic field is out of the screen .

15)    current in the green wire flowing - Up

16)    By right hand   rule direction of current is in upwards direction .