Three resistors are connected in parallel, each has a resistance \(R_1=7 \space \Omega\), \(R_2=7 \space \Omega\), and \(R_3=7 \space \Omega\). Solve for the total resistance of the circuit.
If \(R_1\) were replaced by another resistor such that the total resistance of the circuit is 1 \(\Omega\), what would be its value?
