Final answer:
Unable to calculate the current I3 without correct and consistent information regarding the circuit configuration and resistor values. In a series circuit, current is the same throughout and Ohm's law is used to determine it.
Step-by-step explanation:
To calculate the current I3 through resistor R3, we need to understand that in a series circuit, the same current flows through all components. However, without information on how the resistors are connected in the provided scenario (series or parallel), we cannot make a direct calculation. Additionally, the information provided contains inconsistencies and does not correspond to the initial values given for R1, R2, R3, and R4. Therefore, we cannot provide a specific answer to this question without the correct and consistent information regarding the circuit configuration and resistor values.
Normally, if we had a correct series circuit, the total resistance (Rtotal) would be the sum of all individual resistances, and using Ohm's law (V = IR), we could calculate the current I using the formula I = V/Rtotal. This current would be equal across all resistors in a series circuit, including R3.