Hal 225 no 32

Diket :

R1 = R2 = R

R3 = 2R

Daya pada R1 = P



Tanya :

Berapa daya pada R2 dan R3?



Jawab:

P= I*I*R

I=I2+I3

I2= I-I3



V2=V3

I2*R2=I3*R3

I2*R = I3*2R

I-I3 = 2I3

I = 3I3

1/3 I = I3



I2 = I- 1/3 I

= 2/3 I



P1 : P2

I*I*R : 2/3I*2/3I*R

1 : 4/9



P1 : P3

I*I*R : 1/3I*1/3I*2R

1 : 2/9