Question

For a circuit find the total potential differences if two resistors

of resistance R1 and R2 respectively kept series wise for a
current I passing through it.

Answer 1

-- If the two resistors are connected in series, then they behave like a single resistor whose resistance is (R₁ + R₂) ohms.

-- For any resistance, the potential difference (volts) across the resistance is V = (current) x (resistance) .

-- So in THIS circuit, V = I x (R₁ + R₂) .