Three cells are connected in parallel with their like poles connected together with wires of negligible resistance. The e.m.f. of the cells are 2V, 3V and 4V respectively and their internal resistances are `1 Omega`, `2Omega` and `3Omega`, respectively. Find the current through each branch.

How will you connect three resistances of 4 ohms each to get 12 Omega , 6 Omega and 4/3 Omega respectively?

Three resistances 15Omega , 20 Omega and 10 Omega are connected in parallel. Find the effective resistance of the circui

A cell of e.m.f. 3 V and internal resistance 4 Omega is connected to two resistances of 10 Omega and 24 Omega joined in parallel. Find the current through each resistance using Kirchhoff's laws

Calculate : total resistance and R_1 = 3 Omega , R_2= 6 Omega , R_3 = 5Omega, V = 14 V.

A battery of emf 4 volt and internal resistance 1 Omega is connected in parallel with another battery of emf 1 V and internal resistance 1 Omega (with their like poles connected together). The combination is used to send current through an external resistance of 2 Omega . Calculate the current through the external resistance.

The e.m.f. e and the internal resistance r of the battery shwn in figure are 4.3 V and 1Omega respectively. The external resistance R is 50Omega . The resistance of the ammeter and voltmeter are 2.0Omega and 200Omega respectively. If the switch is thrown to the other side, the reading of the ammeter will be

Three resistors having resistances of 15 Omega , 3 Omega and 4 Omega are connected in series. What is the effective resistance in the circuit?

A bulb of 60 w is connected across a source of 240 v . Find the resistance of the bulb.

A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 Omega . The additional resistance required to produce a potential drop of 1 milli volt per cm is