What is a spring factor? Find its value in case of two springs connected in (i) series and (ii) parallel.

Write short notes on two springs connected in series.

Write short notes on two springs connected in parallel.

Resistances of two coils of wire are 3 Omega and 6 Omega . If these coils be connected is (i) series and in (ii) parallel combination, then what will be the equivalent resistance in each case ?