Three resistors `R_1, R_2, R_3` are to be combined in parallel connection. Arrive at the expression for the effective resistance of parallel combination.

Three resistors R_1, R_2, R_3 are to be combined as shown in the figure. Which combination has lowest resistance. Arrive at the expression for the effective resistance of this combination

Write the expression for the effective capacitance of two capacitors connected in parallel.

Three resistors 2Omega , 4Omega and 5Omega are combined in parallel. What is the total resistance of the combination?

A cell and two resistors R_1 and R_2 are provided to you. Derive an expression for the effective resistance of the circuit in which current is the same in both resistors.

Resistance are used to reduce the current flow in a circuit. Resistance can be connected in series and parallel to obtain the required value of resistance. Derive an expression for the effective resistance when three resistors are connected in parallel.

Three resistances R, 2R & 3R are connected In parallel to a battery. Then heat is maximum In.

Three resistors 1ohm, 2ohm and 3ohm are combined in series. What is the total resistance of the combination?