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Is a Fuse a Resistor?
- Fuses and resistors may seem similar, but they play different roles in electrical circuits.
- Fuses ensure that excessive current does not flow through a circuit and protect the system from being damaged.
- Resistors, on the other hand, regulate or control voltage and current levels within a circuit.
- The conductive material in a fuse heats up when current exceeds its rating, melts and interrupts the circuit. The flow of current is halted to prevent overheating, fires, and damage to the circuit.
- Resistors control current flow in a circuit and generate voltage drops and heat due to their resistance.
- In terms of protection and control, fuses offer protection against excessive current, while resistors primarily function as adjustment devices.
- Fuses, being sacrificial components, need to be replaced when they melt and interrupt the circuit, while resistors can be replaced if damaged or failed.
- Resistors are connected in series with other components, while fuses are normally connected in series within the current path to prevent excessive current flow.
- Different electrical applications require different fuses with varying current and voltage ratings, while different types and packages of resistors are available to suit various applications.
- To prevent damage, a blown fuse should be replaced with a new one that has the proper rating.
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