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Alternating (AC) and direct (DC) currents are different forms of electricity. It is universal nowadays to have AC in all houses because the electricity grid distribution system is all AC. DC was used by Edison and continued for some years but is now discontinued. It is still used in vehicles where 12 V DC is the normal system.

A light switch simply interrupts the current or makes the circuit as required, and both AC and DC need to have switches.

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When an electric switch is pushed, it completes a circuit that allows electricity to flow to the light fixture in the room. The electricity energizes the light bulb, causing it to emit light. The light then illuminates the room, allowing you to see.


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An electric fire has a wattage of between 1 and 3 kw depending on the model - a light bulb can be anywhere between 40 and 120w.So an electric fire is a lot hotter.Another AnswerIf, by 'hotter', are referring to temperature, then lamps operate at a far higher temperature than an electric fire (white hot vs red hot!). If, by hotter, you are referring to the amount of energy consumed, then electric fires win!


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