# Science Quiz / Maxwell's Equations

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## Can you name the missing word/words?

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LawMissing word
Gauss's Law for E states that the electric field strength summed over a closed surface like a sphere for instance is equal to the enclosed - - - - - - divided by constant epsilon z
E is in newtons per - - - - - - -
Coulomb's Law states that force is inversely proportional to r squared and proportional to the charges and also that the constant of proportionality is 1 over 4 - - eo
- - - - - ' - Law for B states that if you have a closed surface then any magnetic field line that enters at one point on the surface leaves at an other point.
- - - - - - ' - Law states that the amount of magnetic field strength acting along a closed loop is proportional to the current going through a surface attached to the loop
and also if there is a changing electric field acting through the surface then it is also proportional to the change in electrical - - - -
- - - - - - - ' - Law of induction tells us that the back emf equals the change in magnetic flux
If you move a wire through a - - - - - - - - field the induced emf is the integral v x B . dl
LawMissing word
Faraday's law states that a - - - - - - - - magnetic field induces an electric field.
The magnitude of the back - - - equals the integral E.dl over a closed loop which equals the change in magnetic flux
The - - - - - - - force is qE or q(E +v x B) since vxB=E
The Law of - - - - and - - - - - - can be used to find the magnetic field strength near a current carrying wire
The Biot and Savart equations are B = i μ divided by 2 pi -
The - - - - - - - - field energy density = one half epsilon zero E squared
The - - - - - - - - field energy density = one half (one over mu zero) B squared

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