A battery 9 V is connected in series with resistors of 0.2`Omega` ,0.3`Omega` 0.4 `Omega` 0.5`Omega` and 12 `Omega` respectively.How much current will flow through a 12`Omega` resistor?

Three cells of emf 2.0 v, 1.8 V and 1.5 V are connected in series. Their internal resistances are 0.05 Omega, 0.7 Omega " and " 1 Omega respectively. If the battery is connected to an external resistor of 4 Omega via a very resistance ammeter, what would be the reading in the ammeter ?

Two cells, E_(1) and E_(2) of emfs 4 V and 8 V having internal resistances 0.5 Omega and 1.0 Omega respectively are connected in opposition to each other. This combination is connected in opposition to with resistance of 4.5 Omega and 3.0 Omega . Another resistance of 6 Omega is connected in parallel across the 3 Omega resistor. Draw the circuit diagram

A battery of e.m.f 6 V is connected to a resistor of 100 Omega through an ammeter of resistance 2Omega . If 50 mA current flows through resistor, find the itnernal resistance of the battery.

Find the magnitude of resistance X in the circuit shown, whEn no current flows through the 5 Omega resistor.

How can three resistors of resistance 2 Omega 3 Omega and 6 Omega be connected to give a total resistance of (a) 4 Omega (b) 1 Omega ?