Follow the standard lab precautions. Post-lab Questions: What is the relationshi

Question

Follow the standard lab precautions. Post-lab Questions: What is the relationship between B and I? Direct or Inverse What is the relationship between B and R? Direct or Inverse The unit of a magnetic fields is Wb. True or False The unit of a magnetic flux is Wb. True or False What is the right-hand-rule? What is the modified right-hand-rule? In Ohm's law, the current and resistance are inversely proportional to each other. True or False In an electrical circuit, a resistance of 200 ohms is connected with a power supply of 10 volts. What is the current in amperes and milliamperes? 1 Tesla = ____Gauss 10,000 G = ____T An electron enters a magnetic field of .05 T that is parallel to the motion of electron. What is the force on such an electron? Results What conclusions can you draw from the experimental observations, calculations, and post-lab questions?

Explanation / Answer

B = uo*I/4pi *r

2 )

direct

3 )

inverse

4 )

False : magnetic field unit is Tesla(T)

5 )

True

6 )

point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge.

7 )

index finger in the direction of current

middle finger in magnetic field direction

thumb will show force direction

8 )

True : I = V/R

9 )

I = V/R = 10/200 = 0.05 A = 50 mA

1mA = 10^-3 A

10 )

1tesla = 10000 gauss

11 )

10,000G = 1T

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