Class 10 ICSE Physics Work Power & Energy Most Likely Questions
Here we provide Class 10 physics important notes,board questions and predicted questions with Answers for chapter Work Power & Energy. These important notes,board questions and predicted questions are based on ICSE board curriculum and correspond to the most recent Class 10 physics syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
Class 10 ICSE Work Power & Energy Most Likely Questions
Work Power & Energy Most Likely Questions
Q1
Express joule in terms of erg
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Q2
Define a kilowatt hour. How is it related to joule?
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Q3
Define the term power. State its SI unit.
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Q4
The power of a motor is 40kW. At what speed can the motor raise a load of 20,000 N?
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Q5
A man raises a box of mass 50kg to a height of 2m in 20s, while another man raises the same box to
the same height in 50s.
(a) Compare:
(i) the work done, and
(ii) the power developed by them.
(b) Calculated:
(i) the work done, and
(ii) the power developed by each man. Take g = 10 N kg-1.
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(a) Compare:
(i) the work done, and
(ii) the power developed by them.
(b) Calculated:
(i) the work done, and
(ii) the power developed by each man. Take g = 10 N kg-1.
solutions
Q6
State the energy changes in the following cases while in use:
(a) Loudspeaker
(b) A steam engine
(c) Microphone
(d) Washing machine
(e) A glowing electric bulb
(f) Burning coal
(g) A solar cell
(h) Bio-gas burner
(i) An electric cell in a circuit
(j) A petrol engine of a running car
(k) An electric iron
(l) A ceiling fan
(m) An electromagnet.
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(a) Loudspeaker
(b) A steam engine
(c) Microphone
(d) Washing machine
(e) A glowing electric bulb
(f) Burning coal
(g) A solar cell
(h) Bio-gas burner
(i) An electric cell in a circuit
(j) A petrol engine of a running car
(k) An electric iron
(l) A ceiling fan
(m) An electromagnet.
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