A voltage divider is built by connecting two resistors in series. The first resistor, R1, has a resistance of 7.00 k\Ω. The second resistor, R2, has a resistance of 3.00 k\Omega​​​​​​​. We apply a voltage Vin = 10.0 V across the two resistors in the divider. This question has three parts.-a. Calculate the current I flowing through the circuit.
a. Calculate the voltage V2 across resistor R2.
b. In the circuit described above, we replace R2 with an unknown resistor R?. We measure the voltage V2 across this resistor and find V2 = 5.0 V. Calculate the unknown resistance R?.