Calculating Current and Voltage in a Circuit with Multiple Resistors

[nothing909]

4.48 + 3.58 + 5.97 = 14.03

 

[donpacino]

looks good man...
my recommendation, work a few more practice problems like this!

 

[nothing909]

k, wait, just one more question before i go. how did will work out the total current was 14A?

 

[William White]

4.48 + 3.58 + 5.97 = 14.03

yes!

now, you can see the key is to have a good drawing!

10 minutes on a good drawing saves you hours of work!

 

[William White]

k, wait, just one more question before i go. how did will work out the total current was 14A?

you work out the total resistance of the circuit

look at my drawing

you have

3ohms (the resistor in series) +
1 / ( 1/(1+2) + 1/4 + 1/5 ) = 1.3 ohms (this is the rule for resistors in parallel ... you remember learn this one!)

total R = 3 + 1.3 = 4.3 ohms

total current = voltage / total R
= 60 / 4.3
= 14A

 

[nothing909]

omg, that was such a silly question, i worked that out myself right at the very start...

anyway thanks for all the help, that simple question was giving me a lot of stress.