Hello guys! So I am doing a physics lab and am a little bit stuck on the post la

Question

Hello guys!

So I am doing a physics lab and am a little bit stuck on the post lab questions. To summarize the lab and what it is about:

Anyways, here are the questions. They should not be that difficult, please I encourage you to skip questions you feel are hard to answer without data, but based on what the lab is about here are the post lab questions:

Thank you and high rating to whoever answers all!

I. Introduction Purpose If you have a set of points that are all at the same potential these are called equipotentials and a line connecting a set of equipotential points is called an equipotential line. In this lab we will map equipotential lines for different types of charge distributions. Equipotential lines are perpendicular everywhere to electric field lines. To do this we will use sheets of carbon paper that are slightly conductive. Patterns can be drawn on the paper using conductive ink. These patterns can then be connected to a battery to simulate distributions of positive and negative charge. A device called a digital multimeter will be used to measure the electric potential difference (voltage) between different points on the paper. The following equations may be useful: Electric Potential E-K Electric Field By the end of this lab you should be able to: Have an intuitive understanding of electric potentials and fields for some basic charge distributions. Determine the relationship between electric field and electric potential. Materials/Equipment Equipotential kit: Corkboard, 3 sheets of conductive paper with electrode patterns (lines, circles, random), 6 conductive, metal pushpins DO Power supply digital multimeter red probe black patch cord with banana plugs at each end red and black dual patch cord with banana plugs and alligator clips

Explanation / Answer

1) Not clear

2) If we do not connect ground lead the electric potential won't have a reference hence there will be zero erroe in reading.

3) Your body is itself a conductor (with high resistance) hence touching the carbon paper with your hands will affect the readings.

4) Force on a positive charge acts in the direction of electric field hence if we carry the charge along the electric field lines work required is negative and if we carry the charge opposite to the electric field lines positive work is required.

5)No, electric field lines simply gives the direction of force on unit test positive charge. Magnitude may vary depending on the distance from source charge.

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