Why does putting resistors in parallel drop the resistance? (3/4)
Now we'll add in another bridge, I-291. This bridge also has congestion (resistance,) but at the end of the day we've opened up more opportunities for traffic to flow. Thus we expect traffic to speed up, representing an overall drop in resistance. That's how adding a 470Ω and 150Ω resistor together can cause 112Ω of resistance. Even though both roads are bad, having both is better than having only one.
Why does putting resistors in parallel drop the resistance? (3/4)
Now we'll add in another bridge, I-291. This bridge also has congestion (resistance,) but at the end of the day we've opened up more opportunities for traffic to flow. Thus we expect traffic to speed up, representing an overall drop in resistance. That's how adding a 470Ω and 150Ω resistor together can cause 112Ω of resistance. Even though both roads are bad, having both is better than having only one.