jj_01_09_001v_005 Casio fx-82NL
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1000 Ohm // 4 Watt
P = I2 * R
I2 = P/R = 4 : 1000 = 4 mA
I = √4mA
I = 0.063 A = 63 mA door R1
I23 = 63 mA /2 = 31.5 mA
P = I2 x R
P2 = P3 = 31.5 mA2 x 1000 = 0.99 W , afgerond 1 W
4 -3 0.063 A ENG-notatie 63exp-3 = 63 mA
31.5 -3 0.315 0.000992 x 1000 0.992255 ENG-notatie 993exp-3 = 993 mW