F Answer each in one or two sentences.
1.
Mention the role of connecting wires in a circuit.
2. Give the importance of the fuse in a circuit.
3. When does a solenoid become an electromagnet?
4. Indicate what happens when the switch of an electric bell is pressed.
Answers
Answer:
1.Connecting wires provide a medium to an electrical current so that they can travel from one point on a circuit to another. In the case of computers, wires are embedded into circuit boards to carry pulses of electricity.
2.In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.
3.An electromagnet is a coil of wire with an electric current flowing through it. When the wire is coiled around in a cylinder, we call this a solenoid. The solenoid becomes an electromagnet when a current flows through it.
4.When the switch is pressed, the circuit is completed. The current flows through the wire and the coil becomes an electromagnet. The tiny iron hammer is attracted by the electromagnet and strikes on the bell. ... This completes the circuit and electric current begins to flow once again.
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