Multiple choice

The circuit of a tester may be complete, yet the bulb may not glow as the current through it may be too weak. How can such weak currents be detected?

  1. Using LED in place of the bigger bulb.

  2. By breaking the circuit.

  3. By changing the circuit.

  4. By using a different metallic wire.

  5. By changing the solution in which the wires are immersed.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The LED glows even if the current is very weak.

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