Induction Lab
Launch the Faraday's Electromagnetic Lab simulation.
Purpose
Qualitatively investigate induction phenomena.
Materials
computer and internet access
General Magnetism
1. Click on the Bar Magnet Tab. You should see a bar magnet and compass on the screen.
2. Draw an illustration of the Earth’s magnetic field.
- What color refers to the north pole? ________
- What color refers to the south pole? ________
- Move the compass around the bar magnetic and observe the deflection of the compass needle. What’s the relationship between the tip of the compass needle and the bar magnet?
2. Draw an illustration of the Earth’s magnetic field.
Electromagnetic Induction – Pickup Coil
3. Click on the Pickup Coil Tab. You should see a bar magnet and a looped circuit. Set the number of loops to 1 and note what happens when the follow conditions are produced.
4. Does the direction of the magnetic’s motion affect the bulb brightness? If so, describe how.
7. Does changing the area of the loop affect the bulb brightness? If so, describe how.
8. Does flipping the magnet’s polarity affect the bulb brightness? If so, describe how.
5. Does the speed of the magnetic affect the bulb brightness? If so, describe how.
7. Does changing the area of the loop affect the bulb brightness? If so, describe how.
8. Does flipping the magnet’s polarity affect the bulb brightness? If so, describe how.
Electromagnetic Induction – Electromagnet
9. Click on the Electromagnet Tab. You should see a battery connected to a coiled loop and a compass. Move the compass around the electromagnet magnetic and observe the deflection of the compass needle. Move the compass around the electromagnet in order to determine the North and South poles of the electromagnet. Use the RHR to explain the polarity of the coil. What’s the sign of the charges moving in the simulation?
10. Does changing the current source from DC to AC affect the compass? If so, describe how.
11. Describe the movement of the charges in the loop in DC and AC current.
Electromagnetic Induction – Transformer
12. Click on the Transform Tab. You should see a battery connected to a coiled loop and a looped circuit. Move the electromagnet around the looped circuit and observe the brightness of the bulb. What conditions are necessary to light the bulb?
13. Does changing the current source from DC to AC affect the bulb brightness? Does the electromagnet have to move to light the bulb?
13. Does changing the current source from DC to AC affect the bulb brightness? Does the electromagnet have to move to light the bulb?
14. What variables affect whether the bulb is lit and the bulb brightness?
Electromagnetic Induction – Generator
15. Click on the Generator Tab. You should see a faucet, a magnet fixed to a paddle wheel and a looped circuit. Describe what happens when the water is turned on.
16. What variables affect the whether the bulb is lit and the bulb brightness?