Electric Field's

  • Created by: Issy
  • Created on: 01-10-17 11:00
Which is a possible unit for electric field strength?
V/m
1 of 17
What isn't an equation for electrical field strength?
E=kQ/r
2 of 17
Define electric field strength at a point in space
Force per unit positive charge
3 of 17
What do the spacing of field lines indicate?
The electric field strength
4 of 17
What is an equipotential surface?
A continuous surface joining points of the same potential in a three dimensional electric field
5 of 17
What is not a correct method for constructing field lines?
With varying spaces between them
6 of 17
When can E=V/d be applied
In uniform electric fields where the filed lines are straight [E=-dv/dr
7 of 17
What effect does increasing the distance between the two plates have on the electric field strength
The electric field strength decreases
8 of 17
What statement is incorrect about millikan's oil drop experiment is incorrect?
They measured the radius of the oil drop before the experiment to calculate the volume and thus the mass [mass=density x volume
9 of 17
What statement about a LINAC is incorrect?
All statements are correct
10 of 17
What one of the below isn't a use for deflected beams?
AFM- Hitting targets in an Atomic Force Microscope
11 of 17
How can a beam be deflected?
Both
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What does the middle finger represent in Fleming's Left Hand Rule?
The direction of current -this is the same as the direction of motion of a charged particle
13 of 17
What does the thumb represent in Fleming's Left Hand Rule?
The direction of force
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Why do the paths of some charged particles spiral inwards?
The velocity of the particle decreases from collisions with other particles as r=mv/Bq as v decreases so does r
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What is Bremsstrahlung?
A characteristic of all accelerating and decelerating particles is that they radiate energy. [Change in direction is also acceleration]
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What statement about a cyclotron in incorrect?
The current supplied is direct
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Other cards in this set

Card 2

Front

What isn't an equation for electrical field strength?

Back

E=kQ/r

Card 3

Front

Define electric field strength at a point in space

Back

Preview of the front of card 3

Card 4

Front

What do the spacing of field lines indicate?

Back

Preview of the front of card 4

Card 5

Front

What is an equipotential surface?

Back

Preview of the front of card 5
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