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

(a) With the help of a diagram, derive the formula for the resultant resistance of these resistors connected in series. (b) For the circuit shown in the diagram given below: Calculate: (i) the value of current each resistor. (ii) the total current in the circuit. (iii) the total effective resistance of the circuit.

(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel. (b) In the circuit diagram shown below, find: (i) Total resistance. (ii) Current shown by the ammeter A

The equivalent resistance of resistors connected in series is always

(a) With the help of a circuit diagram, deduce the equivalent resistance of two resistances connected in series. (b) Two resistances are connected in series as shown in the diagram: (i) What is the current through the 5 ohm resistance? (ii) What is the current through R? (iii) What is the value of R? (iv) What is the value of V?

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

The effective resistance of three equal resistances, each of resistance r, connected in parallel, is

(a) With the help of a suitable circuit diagram peove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sym of the reciprocals of the individual resistances. (b) In an electric circuit two resistors of 12 Omega each are joined in parallel to a 6V battery. Find the current drawn from the battery.

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