Info:
| Weerstanden in serie | | Weerstanden parallel |
Rv = R1 + R2 + R3 + ...
I = I1 = I2 = I3 = ...
U = U1 + U2 + U3 + ... | |
| 1 | = | 1 | + | 1 | + | 1 | + ... |
| Rv | R1 | R2 | R3 |
I = I1 + I2 + I3 + ...
U = U1 = U2 = U3 = ...
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Bereken de weerstand van R2.
Gegeven is dat R1 = 35 Ω, de spanning over de spanningsbron = 62.5625 V en de stroomsterkte = 2.75 A.
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Uitwerking:
| Gegeven | | Uitwerking | R1 = 35 Ω
I = 2.75 A
U = 62.5625 V
Rv = U / I
R2 = ? | | Rv = U / I
Rv = 62.5625 / 2.75 = 22.75 Ω
1/R2 = 1/Rv - 1/R1
1/R2 = 1/22.75 - 1/35
R2 = 1/(1/22.75 - 1/35) = 65 Ω |
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