The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is `0.4 Omega`, what is the maximum current that can be drawn from the battery?

A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Omega . What maximum current can be drawn from the cell? Could the cell drive the starting motor of a car?

(a) Six lead-acid type of secondary cells each of emf 2.0 V and internal resistacne 0.015Omega are joined in series to provide a supply to a resistance of 8.5 Omega. What are the current drawn from the suply and its terminal voltage ? (b) A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Omega. What maximum current can be drawn from the cell? Could the cell drive tghe starting motor of a car ?

(a) Three resistors 2 Omega 4 Omega and 5 Omega are combined in parallel. What is the total resistance of the combination ? (b) If the combination is connected to a bettery of emf 20 V and neglibible internal resistance, determine the current through each resistor, and the total current drawn from the battery.

Let a fully charged lead-storage battery contains 1.5 L of 5MH_2SO_2 . What will be the concentratis of H_2SO_4 in the battery after 2.5 ampere current is drawn from the battery for 6 hour?