Question

What is the main pathway by which energy is wastefully transferred from a light bulb?

Answer 1

The log's energy can be shifted to a thermal store in the surroundings by burning it. The energy transfer occurs by convection (particle movement) and by radiation of heat and light. The potential energy from the batteries in the torch is transferred to the filament of the bulb. The energy is transferred to the surroundings as thermal energy and light.

Answer 2

Heat is the main pathway by which energy is wastefully transferred from a light bulb.

• A chemical (redox) reaction inside the battery of a light bulb causes positive ions to move toward the battery's positive terminal and negative ions to move toward its negative terminal.
• A conduit for charge to flow is made when the battery's terminals are linked through the light bulb. Through the light bulb, negatively charged electrons move from the terminal to the + terminal. Chemical potential energy is transformed into electrical energy via this charge movement.
• The filament in a light bulb glows as a result of being heated by the charge flowing through it. The light bulb does this by converting electrical energy to heat and light energy.

Hence, the correct answer is heat.

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