The value of z is x(.20) = (.40)y
The circuit that are in parallel circuits are option A and option B.
<h3>What are parallel circuits?</h3>
A parallel circuit has branches that divide the current so that just a portion of it passes through each branch.
A parallel circuit has the same voltage (or potential difference) across each branch, but the currents might vary.
Thus, the correct options are A and option B.
Learn more about parallel circuits
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A) The calculated resistance needed to generate the current at low speed is; R = 480 ohms
B) Resistance at medium and larger speeds are;
At medium speed; R is less than that at low speed
At larger speed; R is less than that at medium speed.
A) We are given;
Voltage; V = 120 V
Current at lower speed; I = 0.25 A
Formula for resistance here is;
R = V/I
R = 120/0.25
R = 480 ohms
B) This means that if larger currents are required at higher speeds, it means that lower resistance would be required.
Similarly at medium currents the resistance will be lesser than that at lower speed but greater than that at larger speeds.
Read more on ohms law at; brainly.com/question/1220677
I believe the answer is D) none of these patterns effect
