Elektronen Im Elektrischen Feld Flashcards

1
Q

Querfeld

Formel für die Ablenkbeschleunigung und - geschwindigkeit

A

ay = U * e / d * me

v = ay * t

v = [Wurzel aus: (2 * U * e / m )]

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2
Q

Querfeld

Ablenkung im elektrischen Feld

A

y = (Uy / 4 * d * UB) * x^2

x = 0 bis l

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3
Q

Querfeld

Anstieg der Gerade bei x ( x = l ) = Bewegungsrichtung

A

y = (Uy / 2 * d * UB) * l

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4
Q

Querfeld

Ablenkung auf dem Schirm

A

y = (Uy * l / 2 * d * UB) * (s + l/2)

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5
Q

Querfeld

s und Uy berechnen

A

s = ((y * 2 * d * UB) / Uy * l) - l/2

Uy = (4 * d * UB * y) / l^2

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6
Q

Längsfeld

Gleichung für die dieelektrische Verschiebung

A

D = [Phi]0 * [Phi]r * E

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7
Q

Längsfeld

Krafteinwirkungsformel

A

F = E * e

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8
Q

Längsfeld

Beschleunigungsformel

A

a = F / m = E * e/m

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9
Q

Längsfeld

Beschleunigungsspannung

A

U * e = 1/2 * m * v ^ 2

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10
Q

Längsfeld

Leite die Energie eines Elektrons im elektrischen Feld her

A
E = F / Q
E = U / d

F / Q = U / d

Arbeit im Feld: w = F * s = Q * U

Eel = e * U

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11
Q

Längsfeld

Leite die Geschwindigkeit her.

A

Eel = Ekin
e * U = me/22 * v^2

=> v = [Wurzel aus (2 * e * U / me)]

e/me => spezifische Ladung des Elektrons

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