Question

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Answer 1

The resistance of two resistors in series is the sum of their resistance; that's #1.

Now, what's the general approach to #2?

Answer 2

For n resistors in parallel of resistance R_i, the resistance of the total circuit, R, is

1/r = 1/R_1 + 1/R_2 + ... + 1/R_n

Answer 3

1/R = ...

Answer 4

Hence, what's the answer to the second question?

Answer 5

the second question refers the diagram 1. and the 3 and 4 question with diagram 2

Answer 6

Ok

For the first question, do you understand that the total resistance is 6 + 4 = 10? Hence for question 2, the current is
I = V/R = 12/10 = 1.2 Amperes

===

Answer 7

What then is the resistance of the circuit in parallel?

Answer 8

i thinks its 1/r1 + 2/r2+1/r3 with would be, thats what I don't know

Answer 9

No, it's
1/R = 1/R1 + 1/R2 + 1/R3
= 1/5 + 1/6 + 1/15
= 13/30

Hence what is R equal to?

Answer 10

don't really understand 4....

Answer 11

First you need to find the total resistance of the parallel circuit.

Then the power of the circuit is given by
P = VI
which you can now calculate, because you know V and R.

Answer 12

so it would be 13/30 x 10?

Answer 13

don't really know... help

Answer 14

hey bori, what don't you understand, perhaps i can help you?

Answer 15

is it 10 x .433= 4.33?

Answer 16

questions 3 and 4
help

Answer 17

Okay so for Series Circuits, the total resistance is R(total) = R1 + R2 + R3 .... Do you understand that?

Answer 18

A series circuit is when the resistors are placed side by side, and they are not split up. So series is the first diagram you have

Answer 19

i have 13/30= i think its .433

Answer 20

for question 3

Answer 21

Okay you're talking about the Parallel Circuit now. For Parallel Circuits \[(1/Rtotal) = (1/R1 + 1/R2 + 1/R3)\]

Answer 22

how do i get number 4

Answer 23

Okay well first of all, when you add resistors in parallel, you do this 1/5 + 1/6 + 1/15 = 0.4333 but according to the equation i gave you, all that addition is equal to 1/Rtotal. So you must flip your fraction to get Rtotal.

Answer 24

Do you understand what that means?

Answer 25

i dont understand that

Answer 26

okay so lets say you have 1/x = 1/2. What is x equal to?

Answer 27

2

Answer 28

good. So if 1/Total Resistance = 0.43333, what is your Total resistance?

Answer 29

i think its 0.43333?

Answer 30

if 1/x = 1/2, then x = 2 right? You basically flipped the 1/2. You do the same thing for resistance. 1/(Resistance) = 0.4333/1. So if you flip both sides you get Resistance = 1/0.4333. Do you understand that?

Answer 31

??

Answer 32

so resistance is equal to 1/0.4333?

Answer 33

yes sir

Answer 34

and how do i get number 4

Answer 35

Now power is equal to this Power=Voltage^2/Resistance. Tell me if you get it

Answer 36

no

Answer 37

10^2/ 1/0.4333?

Answer 38

Your voltage is 10 volts, and you resistance you just found is 1/0.4333. Power = (10volts)^2/(1.0.4333)

Answer 39

yes!

Answer 40

thank youu!!!

Answer 41

no problem buddy!

Answer 42

how do i do that equation??

Answer 43

(10volts)^2/(1.0.4333)?

Answer 44

sorry i meant 1/0.4333 :p typo

Answer 45

ok

Answer 46

did you get the answer?

Answer 47

no men, havin trouble with to be honest

Answer 48

okay what's 10^2 and what's 1/0.4333?

Answer 49

100 and 2.307...

Answer 50

perfect, now divide them and you get your answer!

Answer 51

i get 43.35 is it watts or A

Answer 52

watts

Answer 53

Power is in watts, Current is A

Answer 54

thanks

Answer 55

:)

Answer 56

what's the question? the link isn't working for me and i feel like this info will help me with my paper i have to do tomorrow

Answer 57

The link works?

Answer 58

not for me, just blank page

Answer 59

riskydiablo, using the professors formula P= I x V

Answer 60

my answers differ from your formula to his
wich one would be the right one????

Answer 61

can you verify with the diagram if the answer for 4 is 43.35 or 230.7 ????

Answer 62

got it, thanks