Advanced Science Primary 5 Systems

Alexa connected three batteries in a series circuit. However, the bulb did not light up. Which of the following is the most likely reason for this?

A The batteries were connected with their positive terminals facing each other.
B The wire used was too short.
C The bulb was too bright and blew immediately.
D There were too many batteries for one bulb.
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Worked Solution

Step 1: For current to flow, batteries must be connected correctly in series (+ to -). Step 2: If positive terminals face each other (+ to +), the electric current cannot flow. Step 3: This results in an open circuit.

Correct answer: The batteries were connected with their positive terminals facing each other.

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