1.) Nerve cells transmit electrical signals through long tubular axons. These si
ID: 1541968 • Letter: 1
Question
1.) Nerve cells transmit electrical signals through long tubular axons. These signals propagate due to a sudden rush of Na+ ions, each with charge +e, into their axons. If there are two long axonss that are parallel to ech other with a small separation. When these two axons transmit electrical signals in the same direction simultaneously at a moment, will the net force between the axons be...
a) repulsive
b) unable to be determined
c) attractive
2.) A parallel beam of positive ions enters a space between two charged plates, where there is also a magnetic field. For the elctric and magnetic forces on the ions to be in opposite directions, what should be the direction of the electrical field?
a) into the page
b) out of the page
c) vertically downward
d) vertically upward
Explanation / Answer
1) attractive
when two parallel conductors carrying current in same direction then the force between them will be of attractive nature and vice versa
2) direction of magnetic field has to be "directly out of the page"
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