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How was the electric field used to determine the charge of the cathode ray?
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What can you determine from an electric field vector at one point?
From an electric field vector at one point, you can determine the direction of the electrostatic force on a test charge of known sign at that point. You can also determine the magnitude of the electrostatic force exerted per unit charge on a test charge at that point.
Which of the following is true about the electric field around an electric charge?
The electric field around an electric charge varies inversely as the square of the distance to the charge.
Gets stronger as you get closer to an electric charge?
The electric field gets stronger as you get closer to an electric charge.
What sourrounds an electric charge?
An electric field.
What evidence convinced Thomson that cathode rays consist of negatively charged particles?
In a series of experiments in the 1890's, J.J.Thompson showed that cathode rays, or electrons, are deflected by an electric field, they are bent by a magnetic field, and that their charge to mass ratio is about 1/2000th of that of the proton. Light does not have any of these properties.
Are cathode rays deflected toward a negatively charged plate in an electric field?
Yes. Cathode rays, otherwise known as electrons, are repelled by a negative charge, and attracted to a positive charge.
What can you determine from an electric field vector at one point?
From an electric field vector at one point, you can determine the direction of the electrostatic force on a test charge of known sign at that point. You can also determine the magnitude of the electrostatic force exerted per unit charge on a test charge at that point.
What observations did Thomson make to suggest that an electron has negative electric charge?
Thomson observed that a cathode ray bent when in the presence of a magnetic field. After the cathode ray bent the opposite way when the opposite pole of the magnet was placed next to it, Thomson concluded that the cathode ray had a negative charge.
When determining an electric field must a positive test charge be used or would a negative one do as well?
We could just as well use a negative test charge to determine an electric field, but then the Electric field vector would point opposite the direction of the force on the test charge.
Which of the following is true about the electric field around an electric charge?
The electric field around an electric charge varies inversely as the square of the distance to the charge.
Gets stronger as you get closer to an electric charge?
The electric field gets stronger as you get closer to an electric charge.
Is electric field dependent of magnitude of charge?
Electric field is dependent on the magnitude of the electric charge, E = qzc/r2
What is every electric charge surrounded by?
Every electric charge is surrounded by an electric field.
What sourrounds an electric charge?
An electric field.
What is a charges electric field?
electric field due to a single charge.
What observation did Thomson make to suggest that an electron has a negative electric charge?
The deflection of cathodic rays was the source of inspiration for Thomson.
What is the area around an electric charge which is strongest closest to the charged particle?
It's the electric field.
