N-01-01-005-vr-009-Casio-fx-82NL
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R = 50 Ohm
SteL:P = 100 Watt
P = I2 x R
I2 = P / R
I = √ P / R
I = √ 100 / 50
I = √ 2
I = 1.41 A
I = 100 : 50 1.41 A
Het vermogen wordt 4*verhoogt
4 * 100 = 400 Watt
P = I2 * R
I2 = P / R
I = √ P / R
I = √ 400 / 50
I = √ 8
I = 2.82 A
De stroom is dus verdubbeld
I = 400 : 50 2.82 A