Question

experiment to verify series nd parallel combination laws of resistor using meterbridge

Answer 1

IN SERIES --
R1+R2
IN PARALLEL--
1/R1+1/R2; then reverse ratio

Answer 2

Answer:

Aim:

To verify series and parallel combination laws of a resistor using Meter Bridge.

Apparatus required:

A ‘resistance box’, ‘two resistance wires’ with known resistance, a meter bridge, galvanometer, a ‘Leclanche cell’, ‘a jockey’, ‘set square’, connecting wires, and sandpaper.

Theory:  

Combined resistances of two resistances, R1 and R2, when connected in series:$\mathrm{R}_{\mathrm{s}}=\mathrm{R}_{1}+\mathrm{R}_{2}$

Combined resistances of two resistances R1 and R2, when connected in parallel: $\frac{1}{R p}=\frac{1}{R 1}+\frac{1}{R 2}$

R refers to the resistance measured on the resistance box .

Method:

The connections are made in series and parallel circuits accordingly and the readings are observed and inferred to check the series and parallel combination laws of resistance.