When resistors are connected in series, the total voltage (or potential difference ... When resistors are connected in parallel, the supply current is equal to the sum of the currents through ...

It can be done without R2 but that would put the meter in danger of having a high voltage across it. R2 and R3 are two resistors in parallel and combined can be counted as a single 5MΩ ...

Omega\). Adding resistors in parallel decreases the total resistance. The current has a choice of paths and only has to pass along one branch of the circuit. It does not pass through each resistor ...