How many cells each marked `(6V-12A)` should be connected in mixed grouping so that it may be marked `(24V-24VA)`

How many cells each marked (6V-12A) should be connected in mixed grouping so that it may be marked (24V-24A)

How many cells each marked (6V-12A) should be connected in mixed grouping so that it may be marked (24V-24A)

How many cells each marked (6V - 12A) should be connected in mixed grouping so that it may be marked (24V - 24A)

A voltmeter reads 6 V at full scale deflection and is graded as 3000 Omega//V . What resistance should be connected in series with it so that it reads 12 V at full-scale deflection ?

Two heaters, each marked 1000 W, 250 V are connected in series with a 250 V supply. Assuming that their resistance remains constant, their combined rate of heating will be

4 bulbs marked 40 W , 250 V are connected in series with 250 V mains. The total power is

32 cells each of emf 3V are connected in series and kept in a not External the combination shown as emf 84 V How many number of cells are connected reversely?