Statistics for Cathode Rays

Click here to take the quiz!

General Stats
Answer Stats
Score Distribution
Your Score History

General Stats

This quiz has been taken 4 times
(3 since last reset)
The average score is 21 of 35

Answer Stats

Question	Answer	% Correct
Which electrode glowed?	Anode	100%
What electrode did the glow originate from?	Cathode	100%
What were these called?	Electrodes	100%
What actually are Cathode rays made up of?	Electrons	100%
Name a gas used when using cathode tubes for lighting?	Neon or Mercury	100%
What colour did it glow?	Pale green	100%
What was the charge of that electrode?	Positive	100%
Since this is equivalent to kinetic energy, W=	1/2mv^2	50%
At lower pressures, what can electrons do in cathode ray tubes?	Accelerate to faster speeds	50%
What was created when the ^ where connected to an external high-voltage source?	An Electric Current	50%
	Cathode Ray Oscilloscopes	50%
J.J. Thomson used what to create uniform magnetic and electric fields?	charged parallel plates	50%
This meant that when the radius of the path was calculated, Thomson could obtain what?	charge to mass ratio	50%
The electrons undergo what motion due to the magnetic field?	Circular motion	50%
These are separated by?	dark spaces	50%
What equation do you use to calculate the electrical field intensity using force and charge?	E=F/q	50%
Electric field strength is calculated using the formulae:	E=V/d	50%
What equation calculates the force experienced by a particle in a magnetic field when the magnetic field is perpendicular to the particle's velocity?	F=qBv	50%
What is work done equal to?	gain in energy	50%
The colours of the discharge depend on what?	gas used	50%
The first effect that can be seen in cathode ray tubes is?	glow discharge	50%
Plucker placed what on each end of a glass vacuum tube?	Metal Plates	50%
List the two main uses of cathode ray tubes	Monitors	50%
J.J. Thomson finally proved a hypothesis regarding the actual effect of electric fields on cathode rays. What was the real electric charge of cathode rays?	negative	50%
What effect explains the emission of electrons from the cathode surface?	Photoelectric effect	50%
Why weren't scientists initially able to see the deflection in electric fields?	Pressure too high	50%
Since W=Fd, then W also equals:	qEd or qV	50%
If they are not perpendicular, what is the RHS of the equation multiplied by?	sine of the angle	50%
The positive column is broken into what as pressure decreases?	Striations	50%
What was concluded about cathode rays when magnets were placed on each side of the tube?	They are negative	50%
What did the paddle wheel experiment identify about cathode rays?	They have momentum and therefore mass	50%
What was initially the conclusion obtained from placing electric plates on each side of the tube?	They have no charge	50%
What did the Maltese Cross experiment identify about cathode rays	They travel in straight lines	50%
He found this using the combined equation q/m=	v/Br	50%
By equating the magnetic and electric force equations when the beam was undeflected, Thomson was able to determine what?	velocity of the cathode ray particles	0%