PHYS 1112/2212 Lab N8 on Magnetism Go to the following website htt phet colorado

Question

PHYS 1112/2212 Lab N8 on Magnetism Go to the following website htt phet colorado.edu/en/simulation/magnets and electromagnets Click n Now Move the compass around the bar magnet. 1. Which pole of the magnet does the red compass needle point towards? Click "Flip Polarity" in the right menu. 2. Now which pole of the magnet does the red needle point towards? Does it still point toward the same pole? 3. This means that the red part of the needle is a pole. in the right menu. Check the box "Show Field Meter" in the right menu A blue box should appear This measures the Magnetic Field around the magnet (which is known as "B The Magnetic field is measured in Gauss (G). Move the field meter around the magnet. 4. Does the field increase or decrease as you move the meter closer to the magnet? Move your meter so that it is about one inch (on your computer screen away from the North end of your magnet. 5. What is the magnitude of field strength (B) in Gauss? Now move the meter the same distance away from the South end of your magnet 6. Is the amount of magnetic field the same for both North and South ends of a magnet? At the top left of the simulation window, click the "Electromagnet" You should see a battery connected to a wire with loops that has current running through it. Move your compass around the electromagnet.

Explanation / Answer

1. South pole

2. south pole

3. The red needle of the compass is North pole

4. field increases as you go near the magnet

5. 5.0 G

6. 5.0 G , same as the previuos

7. left side is SOUTH end, compass north pole point to SOUTH end

8. the field increases near the electromagnet

9.

The field strength is proportional to the voltage.

loops field 1 0.82 2 1.63 3 2.45 4 3.27

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