Question

A cell makes an electric current flow through a lamp. Two ammeters are connected to measure the current flowing to and from the lamp.

a) What can you say about the readings on both of the ammeters?

1. They will be equal.
2. The ammeter connected to the flow to the lamp will show higher readings.
3. The ammeter connected to the flow from the lamp will show higher readings.
4. The readings on both ammeters will be zero.

Answer 1

The readings on both ammeters will be equal.

Step-by-step explanation:

When two ammeters are connected to measure the current flowing to and from a lamp, the readings on both ammeters will be equal. This is because the ammeters are connected in series with the lamp, and objects in series have the same current passing through them.