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- Homework Statement
- Calculate current through the source

- Homework Equations
- P=UI, U=RI

**4 resistors R1= 10 Ohm R2= 7 Ohm R3= 6 Ohm R4 = 18 Ohm**, internal resistance of source is

**0,5 Ohm**and supply voltage is

**27V**

Total resistance in parallel resistors

**1/R = 0.465**taking the inverse of that i get

**2,15 Ohm**. Add to that the internal

**0,5**and the total comes out to

**2,65 Ohm**.

Total current would then be

**U/R --> 10,2A**rounded up. If it is true that in a parallel circuit the voltage stays the same, than it stands to reason that the sum of the currents should add up to 10,2 but they dont. i get a total current of 12,577 just for the 4 resistors. What is happening here?