(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

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

With the help of a circuit diagram derive the formula for the resultant resistance of three resistance connected : (a) in series and (b) in parallel

(a) (i) State Ohm's law. (ii) With the help of a circuit diagram derive the formula for the resultant resistance of three resistances connected in parallel.

(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?

(a) With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum 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.

Four student have made the following circuit diagrams for determining the equivalent resistance of two resistors connected in series : The correct circuit diagram 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.