Kayla and her friends are setting up chairs for a school play each row will contain the same number of chairs Kayla knows that t
1 answer:
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Answer:
Explanation:
The direction of a magnetic field indicates where the magnetic inluence on the electric charges are directed to.
From the given question, we are to determine the direction of the magnetic field bnet at a point A.
Also, having the notion that the currents in the two wires have equal magnitudes, Then:
Thus; points out of the screen at A.
Answer:
The peak current carried by the axon is 5.85 x 10⁻⁸ A
Explanation:
Given;
distance of the field from the axon, r = 1.3 mm
peak magnetic field strength, B = 9 x 10⁻¹² T
To determine the peak current carried by the axon, apply the following equation;
where;
B is the peak magnetic field
r is the distance of the magnetic field from axon
μ is permeability of free space = 4π x 10⁻⁷
I is the peak current
Re-arrange the equation and solve for "I"
Therefore, the peak current carried by the axon is 5.85 x 10⁻⁸ A
Answer:
0.018 J
Explanation:
The work done to bring the charge from infinity to point P is equal to the change in electric potential energy of the charge - so it is given by
where
is the magnitude of the charge
is the potential difference between point P and infinity
Substituting into the equation, we find