every circuit has a voltage of 3v, a bottom resistance of 50ohms and top resista

Question

every circuit has a voltage of 3v, a bottom resistance of 50ohms and top resistance of 1 ohm.
a.consider circuit A , what is the current travelling through resistance r
b. consider circuit B, it has two batteries(note the orientation). what is the current through resistance r now?
c. consider circuit c, what is the current through resistance r? what does this tell you about the need to orient batteries in particular ways?
d. now consider circuit c with 3 batteries. what would the current through resistance r?
e. hopefully you see patterns. what would the current be if we had 100 batteries in the circuit?
c. suppose we now have a battery with no internal resistance. calculate the current through resistance r in circuits x,y,z
g. use the pattern in part f to determine the current if you had 100 "no internal resistance" batteries in the circuit. do you get the same result as in part a? if not, why not?
h. there are many animals that use electricity to stun prey. instead of batteries, they have thousands of specialized cells(sometimes called electrolytes). what can you say about the advantage of having many, many electrolytes and the need to orient these cells in particular ways? what can you say about the internal resistance of these electrolytes-if the combination of electrolytes is going to be useful to the animal? through resistance r? the current

Explanation / Answer

A) Vnet = 3 V

Req = 50 + 1 =51 ohm

i = V/ Req = 3/51 = 0.059 A

b) Veq = 3+3 = 6 volt

Req = 50 + 1 + 1 = 52 ohm

I = 6/52 = 0.115 A

c) Veq = 3-3 = 0

I = 0

d) V = 3+3+3 = 9 volt

R = 50 + 1+1+1 = 53 volt

I = 9/53 = 0.17 A

e) if 100 batteries

then e = 300 volt

R = (300 x 1) + 50 = 350 ohm

I = 300/350 = 0.857 A

x) I = V/R = 3/50 = 0.06 A

y) I = (3 + 3) / 50 = 0.12 A

z) I = (3 + 3+3) / 50 = 0.18 A

if there are 100 batteries then

I = (100 x 3 ) / 50 = 6 A

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.