What is the voltage across the resistors (parallel circuit)?

Question

What is the voltage across the resistors (parallel circuit)?
can you solve currrent s through each resistor and the voltage across each one: IR1, IR2, IR3, VR1, VR2, VR3

R1= 110 ohms R2= 330ohms R3= 470 ohms

Answer 1

If the resistors are in parallel, then the voltage is the same across all of them - that's pretty much the definition of parallel. If they are the only circuit elements, then that voltage will be the voltage of the circuit. Since you didn't tell us what that voltage is, there's no way for us to figure the rest of the problem. If you know the voltage, though, then Ohm's Law will give you the currents.

Answer 2

I'm going to assume the simplest situation in which the circuit is made of a power source and only 2 resistors. The voltage at the positive end of these resistors would be the same, and the voltage at the negative ends of the resistor would be the same. so, say they're hooked up to a 12 volt battery. the voltage drop across both resistors will be 12 volts. Short answer, yes 2. Not necessarily. Current flow will change with resistance. so if one resistor or is more resistive then the other, then the current will not be the same. Current WOULD however be the same, if were to take these 2 resistors and put them in series. 3. in creating a short circuit across one resistor, you have effectively created a branch that has 0 (or virtually 0) resistance and the other branch which still has it's original resistance (Say, 330 Ohms, whatever) . Current, like water, prefers the path of least resistance so most of the current flowing will go down the less resistive path and very very little will go down the more resistive path. (there's a calculation to determine how much goes down each branch, but that, i think is way beyond your question).

Answer 3

What you are asking is irrelevant, The voltage and current across each part of a parallel circuit are egual.


So Rt= R1R2R3/R1R2+R2R3+R1R3
Then V/Rt = I and V = I*Rt