Question

Draw the diagram of resistors :a) in series b) in parallel​

Answer 1

Resistors in Series :

• When two or more resistors are connected end-to-end to each other then they are said to be connected in series.

• An applied potential V produces current I in the resistors and R1, R2 and R3 causing a potential drop V1, V2 and V3 respectively through each resistor.

• By Ohm's Law, R = R1 + R2 + R3

• Some important points regarding series combination of resistors are as follows:

1. The equivalent resistance is equal to the sum of individual resistances.
2. The equivalent resistance is thus greater than the resistances of either resistor. this is also known as maximum effective resistance.
3. The current through each resistor is same.
4. The potential difference across each resistor is different.

Resistors in Parallel :

• When two or more resistors are connected simultaneously between two points to each other than they are said to be connected in parallel combination.

• An applied potential V produces current I1 in R1, I2 in R2 and I3 in R3.

• Then by Ohm's Law, 1/R = 1/R1 + 1/R2 + 1/R3.

• Some important points regarding parallel combination of resistors are as follows:

1. The reciprocal of equivalent resistance is equal to the sum of the reciprocal of individual resistances.
2. The equivalent resistance is less than the resistance of either resistor. This is also known as minimum effective resistance.
3. The current from the source is greater than the current through other resistor.
4. The potential difference across each resistor is same.