Question

The bulb in the circuit shown alongside does not glow. Where is the fault in the circuit? Correct the fault and redraw the circuit diagram. ​

Answer 1

Answer:

A few possibilities:

• The contacts are not connected as well as they appear.
• The wires have been tied or clamped to the terminals without stripping off the insulation.
• Optical fibre was used instead of metallic wire.
• The bulb is dead (burnt out).
• The battery is dead.
• There is no voltage source in the circuit.
• A switch in series is open (switched off).
• Something in series is blocking most or all of the current because, for example,
• it's defective/burnt out or
• it's a capacitor and the voltage supply is DC.

Answer 2

The bulb in the circuit shown alongside does not glow because the fault in this circuit is the combination of two cells. In the circuit positive terminal of one cell needs to be connected with the negative terminal of the other to bring about the bulb glow.

• An electric circuit is an unbroken direction along which an electric current prevails and/or is eligible to flow. A simple electrical circuit comprises a power source, two conducting wires where one end of each is attached to each terminal of the cell, and a bulb to which the unrestricted ends of the wires leading from the cell are connected.
• When the connections are given rise to appropriately, the circuit will “close” and current will flow through the circuit and will light the bulb.

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