Electric Potential Question
An oil droplet carrying a charge of +2e is in air between two parallel metal plates separated by a distance of 20mm. The pd between the plates is 5.0V.
Calculate the potential gradient between the two plates.
From what I know, Electric field strength = -(potential gradient)
So it should follow that Potential gradient = -(5V/20x10^-3) = -250Vm^-1
But the answer states a positive value; 250.
Is this because of the positive charge of the oil droplet?
Calculate the potential gradient between the two plates.
From what I know, Electric field strength = -(potential gradient)
So it should follow that Potential gradient = -(5V/20x10^-3) = -250Vm^-1
But the answer states a positive value; 250.
Is this because of the positive charge of the oil droplet?
Original post by Protoxylic
An oil droplet carrying a charge of +2e is in air between two parallel metal plates separated by a distance of 20mm. The pd between the plates is 5.0V.
Calculate the potential gradient between the two plates.
From what I know, Electric field strength = -(potential gradient)
So it should follow that Potential gradient = -(5V/20x10^-3) = -250Vm^-1
But the answer states a positive value; 250.
Is this because of the positive charge of the oil droplet?
Calculate the potential gradient between the two plates.
From what I know, Electric field strength = -(potential gradient)
So it should follow that Potential gradient = -(5V/20x10^-3) = -250Vm^-1
But the answer states a positive value; 250.
Is this because of the positive charge of the oil droplet?
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