Guang Jia r: g: b is1:2: 3; B light R: G: B is 2: 4: 6. What's the difference between a light and b light?

Answer: (1) 5: 2 (2) 5: 2, 5: 2 (3) 2: 5, 2: 5 Analysis: 1. According to p = u 2/r, I know that r = u 2/p, and the two resistances are calculated as follows. R2 = 48400/100 = 484Ω r1:R2 = 5: 22, series circuit, according to U=IR, P = I 2r, the ratio of voltage to actual power is equal to electricity. ...