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Question

Which of the following are the necessary items required to build a simple circuit with a tester to verify the flow of electricity?
  1. Wire
  2. Cell / Battery
  3. Bulb
  4. Switch


Solution

The correct options are
A Wire
B Cell / Battery
C Bulb
For a primary closed circuit, only wires and a cell/battery is required for the flow of electricity. To verify that the current is flowing, a testing bulb (LED bulb) is connected. If the bulb is glowing then the connection is complete.

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