7. A wire carries a current toward the bottom of this page as shown bel compass (the circle) is placed below the wire. Draw the compass needle in the circle to indicate the direction that the compass points. (Ignore the effects of the Earth's magnetic field.) wire above compass
7. A wire carries a current toward the bottom of this page as shown bel compass (the circle) is placed below the wire. Draw the compass needle in the circle to indicate the direction that the compass points. (Ignore the effects of the Earth's magnetic field.) wire above compass
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Transcribed Image Text:7. A wire carries a current toward the bottom of this page as shown below. A magnetic
compass (the circle) is placed below the wire. Draw the compass needle in the circle to
indicate the direction that the compass points. (Ignore the effects of the Earth's magnetic
field.)
wire above
compass
8. A proton, initially at rest, is accelerated through a potential difference of 5.0 kV in region A
before entering region B which has a 0.02 T magnetic field directed into the paper and an
electric field directed so that the proton passes through region B without changing velocity.
SO kV
X X
X X
X X
X X X X
A
В
a. Determine the velocity of the proton as it enters region B.
b. What is the magnitude and direction of the electric field in region B?
©Modeling Workshop Project 2004
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