Question

write a note on resistor in series and resistor in parallel?​

Answer 1

When two or more resistors are connected in parallel the voltage gets divided but the amount of current remains the same that is why to find equivalent resistance we used the formula
R=R1+R2.... Rn
When two or more resistors are connected in parallel the current gets divided so we use the formulae...
1/R=1/R1+1/R2....1/Rn

Answer 2

Resistor in series.

The ends of the three resistors are connected so that they follow one after the other in a single line. These resistors are said to be connected in ‘series.’ In such an arrangement, the same current flows through each resistor. The value of current is I and the potential difference between C and D is V. The three resistors, R1, R2 and R3 are connected in series in the circuit.

Resistors in parallel.

Resistors are said to be connected in parallel when their ends are connected at both sides. The figure shows three resistors R1, R2 and R3 connected in parallel between points C and D. V is the potential difference between C and D. Let I1, I2 and I3 be the currents flowing through R1, R2, and R3 respectively