Question

Which of the following are the necessary items required to build a simple circuit with a tester to verify the flow of electricity?

• A. Wire
• B. Cell / Battery
• C. Bulb
• D. Switch

Answer 1

Answer: (A), (B), (C)

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.