Just finished my prelim exam, and I have two main questions
If there is a charged plate, with charges X,Y, and Z residing within it. All the charges are equal. X,Y, and Z are located at different positions within the plate. X is closer to the positive side, Z in the middle and Y closer to the negative.
In this case, would the forces exerted on each charge be the same? or will there be greater force on charges X or Y?
Also, one more question
There is a table of voltage and current, and the question said to plot them, and find the resistance.
What was the most appropriate way of calculating it?
I used the gradient method. I selected the first two points and used rise/run.
They then asked if it was ohmic or non-ohmic
I used the gradient method for the next two points, providing a different resistance, so my reasoning was that since the resistance at various points is different, the resister is non-ohmic. However, the points looked relatively aligned. Was I supposed to use the gradient for the line of best fit? thanks.
If there is a charged plate, with charges X,Y, and Z residing within it. All the charges are equal. X,Y, and Z are located at different positions within the plate. X is closer to the positive side, Z in the middle and Y closer to the negative.
In this case, would the forces exerted on each charge be the same? or will there be greater force on charges X or Y?
Also, one more question
There is a table of voltage and current, and the question said to plot them, and find the resistance.
What was the most appropriate way of calculating it?
I used the gradient method. I selected the first two points and used rise/run.
They then asked if it was ohmic or non-ohmic
I used the gradient method for the next two points, providing a different resistance, so my reasoning was that since the resistance at various points is different, the resister is non-ohmic. However, the points looked relatively aligned. Was I supposed to use the gradient for the line of best fit? thanks.