Question

In the practical beta was provided with two 1.5 V cells, 3 lamps with different resistance ,3 ammeters,a voltmeter and a switch she was asked to draw a circuit such that: three lamps 1,2 and 3 are connected in parallel. The voltmeter is connected in order to measure the e.m.f of the cell. The ammeters 1,2 and 3 are connected in order to measure the current through lamps 1,2 and 3 respectively. The switch is open to switch of all lamps at the same time.

Answer 1

In the practical beta was provided with two 1.5 V cells.

The voltmeter is connected in order to measure the e.m.f of the cell.

If it is necessary to provide significant current for the apparatus, parallel connection of the cells is used:

Three lamps 1,2 and 3 are connected in parallel.

The ammeters 1,2 and 3 are connected in order to measure the current through lamps 1,2 and 3 respectively:

The switch is open to switch of all lamps at the same time.

So