A TV has a power of 65 watts and an efficiency of 70 percent. How much power is wasted as heat? A. 19.5 W B. 2.2 W C

Question

A TV has a power of 65 watts and an efficiency of 70 percent. How much
power is wasted as heat?
A. 19.5 W
B. 2.2 W
C. 0.9 W
D. 45.5 W

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Thu Cúc 4 years 2021-07-28T21:48:49+00:00 2 Answers 22 views 0

Answers ( )

  1. Nick
    0
    2021-07-28T21:50:22+00:00
    Reply

    Option A: 19.5 W

    Power of TV = 65Watt

    If Efficiency = 70%, then the percentage of energy wasted is 30%

    So, the amount of energy getting wasted:

    = 30/100 × 65

    = 1950/100

    = 195/10

    = 19.5 W

  2. minhkhue
    0
    2021-07-28T21:50:39+00:00
    Reply

    Answer: 19.5 Watts Explanation:

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