Question

measuring current
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which of the following shows how to correctly measure the current flow between the lightbulbs connected in series?

Explanation:

To measure current between two series bulbs, an ammeter must be connected in series between them, breaking the existing wire between the bulbs and inserting the ammeter into that gap. This ensures the full current flowing between the bulbs passes through the ammeter.

• The first option places the ammeter at the end of the circuit, not between bulbs.
• The second option places the ammeter before the first bulb, not between the two bulbs.
• The third option correctly inserts the ammeter into the wire connecting the two series bulbs, so it measures the current between them.

Answer:

Third option (the rightmost diagram, with the ammeter connected between the two lightbulbs in the series circuit)