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Question 22: Which uses more energy : a 250 W TV set in 1 hour or a 1200 W toaster in 10 minutes ? Lakhmir Singh Physics Class 10 |
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Answer» TVExplanation:CONVERT time into seconds1*3600=3600 seconds250/3600Energy =POWER(W)*time(s)energy=250*3600energy of tv=900,000Jenergy of toaster=power(w)*time(s)enefy of toaster=1200*(10*60)energy of toaster=720,000Whence the tv uses more energy |
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