Sähkö & magnetismi yhtälöt Flashcards

1
Q

Coulombin laki:

A

F = k x Q1 x Q2 / r^2

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2
Q

Sähkökenttä:

A

E = F / q

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3
Q

Virta:

A

I = Q / t

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4
Q

Virran tiheys:

A

J = I / A

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5
Q

Ohmin laki:

A

U = I x R

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6
Q

Sähkövoima (3 kpl):

A
P = U x I
P = I^2 x R
P = U^2 / R
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7
Q

Vastukset:

A

I = I1 + I2………..

1 / I = 1 / I + 2 / I…………..

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8
Q

Magneettinen voima, varaus:

A

F = q x v x B x sin alpha

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9
Q

Magneettinen voima, virta:

A

F = I x L x B x sin alpha

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10
Q

Suora johdin (magneettinen voiman suuruus):

A

B = Uo x I / 2pii x r

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11
Q

Magneettinenvirta:

A

Phi = B x A x cos alpha

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12
Q

Indusoitu:

A

E = - N x delta Ib / delta t

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