Flashcards
EM
Cards in this deck (13)
- 1Define the electric field strength at a pointThe force per unit positive charge
- 2Define the electrical potential at a pointThe work done to bring a unit positive charge from infinity to that point
- 3Define an electron voltThe energy lost or gained by an electron when it moves through a potential difference of 1Volt
- 4What is the value of an electron volt?E=QV
E=1.6X10^-19 X 1
E=1.6X10^-19 J
so, one eV = 1.6X10^-19 J - 5What type of field exists between two charged parallel plates?A uniform electric field
- 6What are the units of electric field strength (E)?Vm^-1
NC^-1 - 7What field(s) do moving charges have?Both magnetic and electric fields
- 8What way do magnetic field lines travel?North to south
- 9What are the units for magnetic induction (B)?tesla (T)
- 10Define magnetic inductionA magnetic field has a magnetic induction of 1 tesla when a conductor of length 1 metre, carrying a current of 1 ampere perpendicular to the field, is acted on by a force of 1 newton.
- 11What does the strong force do?The strong force overcomes the repulsive forced between protons and holds the nucleus together
- 12What is the weak force responsible for?The emission of a beta particle form the nucleus of a radioactive element by overcoming the attractive force between a proton and a beta particle and ejecting the beta particle from the nucleus.
- 13Name the four fundamental forces of nature.Gravitational Force
Electromagnetic Force
Weak Force
Strong Force
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- Higher Physics Flashcards on EM, created by Lana Duncan on 05/12/2016.
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- Lana Duncan
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