What is the percentage loss of energy as heat in incandescent bulbs?*90%20%95%60%

Break Down the Problem

1. Identify the efficiency of incandescent bulbs.
2. Determine the percentage of energy lost as heat.

Relevant Concepts

• Incandescent bulbs typically convert about 10% of electrical energy into light.
• Thus, the remainder (90%) is lost as heat.

Analysis and Detail

1. Efficiency Calculation: $\text{Efficiency of incandescent bulbs} = 10\%$

2. Energy Loss Calculation: $\text{Energy lost as heat} = 100\% - \text{Efficiency} = 100\% - 10\% = 90\%$

Verify and Summarize

• The calculations confirm that incandescent bulbs lose approximately 90% of their energy as heat.

Final Answer

The percentage loss of energy as heat in incandescent bulbs is 90%.