To find the current through R1 and R2, you will need to use Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R). So, you will need to know the voltage and resistance values for R1 and R2 to calculate the current.
To solve a circuit problem and find the current through R1 and R2, you will need to know the voltage and resistance values for each component in the circuit. You may also need to know the type of circuit (series or parallel) and the total circuit resistance.
In a series circuit, the components are connected in a single loop or path, and the current is the same at all points in the circuit. In a parallel circuit, the components are connected in multiple branches, and the current is divided between the branches. This means that the current through R1 and R2 will be different in a series circuit, but the same in a parallel circuit.
To calculate the total resistance in a series circuit, you simply add up the resistance values of each component. For example, if R1 has a resistance of 10 ohms and R2 has a resistance of 20 ohms, the total resistance would be 30 ohms.
To calculate the total resistance in a parallel circuit, you will need to use the formula 1/Rtotal = 1/R1 + 1/R2 + ... + 1/Rn, where R1, R2, etc. are the resistance values of each branch. Once you have this value, you can use Ohm's Law to find the current through R1 and R2.