Capacitance and electric field homework

AI Thread Summary
The discussion focuses on calculating the force on an electron in an electric field of 3.0 x 10^6 Vm^-1. The relevant equation used is the relationship between electric field and force, where force equals the electric field multiplied by the charge of the electron. Participants reference HyperPhysics for additional context and formulas related to electric fields. The problem highlights the implications of ionization due to collisions of accelerated ions and electrons. Understanding these concepts is essential for solving the homework problem effectively.
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Homework Statement



ions and electrons produced in the electric field between the hand and the plate (3.0 x 10^6 Vm^-1) are accelerated and may collide with other particles, causing further ionisation. Calculate the force on an electron in this field.

Homework Equations



E=V/d

The Attempt at a Solution

 
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I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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