State Ohm's law. Derive an expression for the equivalent resistance of a number of resistances in parallel.

Find an expression for equivalent resistance of three resistors joined in parallel.

What is Ohm's law ? How is it represented graphically ? Derive an expression for the resultant resistance of a series combination of resistors.

With the help of a diagram derive the formula for the equivalent resistance of three resistances connected n parallels?

Equivalent resistance (in ohm) of the given network is

State Ohm's law. Derive the laws of resistances, when they are connected: (i) in series (ii) in parallel.

What is the ratio of equivalent resistance of series combination of n equal resistance to the equivalent resistance in parallel combination of these n resistances ?

Ohm's law expressed as E = IR

Calculate the equivalent resistance when two resistances of 3 ohms and 6 ohms are connected in parallel.

Three equal resistances when combined in series are equivalent to 90 ohm. Their equivalent resistance when combined in parallel will be: