1.a) two wires are placed next to each other. when a current flows downward in t
ID: 2093710 • Letter: 1
Question
1.a) two wires are placed next to each other. when a current flows downward in the left wire, a force pushes the two wires apart. what direction is the current flowing in the right wire?
b) a wire loop is pushed into a magnetic field that points out of the page. what direction is the magnetic field created by the induced current pointing?
c) a horizontal wire carries a current straight away from you. from your point of view, draw the magnetic field caused by this current.
d) at a particular instant, an electron moves eastward at speed V in a uniform magnetic field that is directed stright downward. draw the magnetic force at one instance.
e) a coil lies flat on a horizontal tabletop in a region where the magnetic field points stright up. the magnetic field disappears suddenly. when viewed from above, what is the direction of the induced current in this coil as the field disappears?
f) a proton moves to the left in a magnetic field that points to the right. what is the direction of the force on the proton?
Explanation / Answer
a. upward
b. into the page
c. tagential around the wire (in the form of circular motion around the wire)
d. upwards
e. downwards
f. zero
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