The job of a bulb is to convert electrical energy into light energy, a by product is heat energy.
The bulb is the load of the circuit, without it you have a short circuit.
The job of a bulb is to give off heat and light energy
The bulb converts energy from the power source into light and heat. It is the load in the circuit.
he invented the light bulb
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The job of a battery is to power the torch. if the circuit is not complete then the bulb wont light up and if the batteries arent the right way round the bulb wont light up either.
The job of a light bulb is to convert electrical energy into visible light energy. (Not ALL of the electrical energy a bulb uses is converted to light energy. Their efficiency is quite low. An incandescent light bulb is more efficient as a heater than as a source of visible light. Fortunately, our eyes are very sensitive.)
The job of the bulb in a circuit is to convert electrical energy to light. It's called the load in the circuit.
To conduct the flow of electrons/electricity from the battery to the bulb and back.
A light ulb converts electrical current to heat (and light).
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A job for main dealer.