2021-12-15T12:56:00+00:00

# Physics: Position and magnitude of electric charge

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# Physics: Position and magnitude of electric charge

A +3.0 charge is at and a -1.0 charge is at .
At what point or points on the x-axis is the electric potential zero?
X = ___________ cm

A -2.0 charge and a +2.0 charge are located on the x-axis at and , respectively.
At what position or positions on the x-axis is the electric field zero?
At what position or positions on the x-axis is the electric potential zero?

Estimate the magnitude of the electric field in a cell membrane with a thickness of 8 .

A ion moves from inside a cell, where the electric potential is -70 , to outside the cell, where the potential is 0 .
What is the change in the ion`s electric potential energy as it moves from inside to outside the cell?
A 3.0 3.0 parallel-plate capacitor has a 3.0 spacing. The electric field strength inside the capacitor is 1.5×105 .
How much charge is on each plate?

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