Flashcards PHYS202.01 - Copy of Week 4 Flashcards by Jennifer Pearce

Q

what is flux when charge is parallel to surface

A

zero

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Q

What A stands for?

A

Area

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Q

“Infinity” Objects

A

one dimention &laquo_space;others

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Q

Infinite cylindar/wire

A

One dimensional

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Q

Infinite sheet/plane/slab

A

Two dimensional

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Q

Rho (ρ) equals

A

Charge/volume

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Q

Sigma (σ) equals

A

Charge/area

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Q

EAcos(theta) = ?

A

Flux

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Q

p = ?

A

charge/volume

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Q

equation for infinite plane

A

E=σ/2εo

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Q

Ohms Law

A

V=IR

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Q

Unit for Current

A

Amps

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Q

Unit for Resistance (R)

A

Ohms (Ω)

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Q

Unit for Voltage (V)

A

Vollts (v)

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Q

Direction electric field goes according to an infinite plane

A

Perpindicular to the plane

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Q

Flux equation

A

EAcosθ=Qenclosed/εo

Q

Height &laquo_space;Width + Length in…

A

2D

Q

E = pD/Eo is for…

A

inside 2D Slab

Q

One Dimensional Objects

A

R &laquo_space;L

Q

Two Dimensional Objects

A

Height &laquo_space;Length + Width

Q

Surface Charge Density

A

Sigma = Charge/Area

Q

Volume Charge Density

A

P = Charge/ Volume

Q

Planar symmetry

A

system only varies with distance from a plane

Q

Gaussian surface

A

any enclosed (usually imaginary) surface

Equation for a plane

E= (sigma)/2Eo

Equation for spherical symmetry (outside)

E = kQ/D^2

Gaussian surface equation

Flux = Qenclosed/Epsilon Naught

Equation for line/cylinder (outside)

E=(2K(lambda))/D^1

When you have a sphere, you use " " symmetry.

Spherical

When you have a cylinder, you use " " symmetry.

Cylindrical

What does U stand for?

electric potential energy

what does V stand for?

electric potential