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Grade 6 Science Power Energy
Test Description: Power Energy
Instructions: Answer all questions to get your test result.
1) Power = work done/ Time taken. Power is:
A
Work done in a certain time.
B
A force of gravity exerted by the earth on a body.
C
A natural phenomenon by which the earth attracts free bodies.
D
None of the choices.
2) Work= Force x Distance. Work is:
A
A natural phenomenon by which the earth attracts free bodies.
B
The product of the force and covered distance.
C
A force of gravity exerted by the earth on a body.
D
None of the choices.
3) The relation between work done, power and time is:
A
W = P / t.
B
P = W / t.
C
P = W × t.
D
P = W – t.
4) The SI unit of power is:
A
Kilogram
B
Joules
C
Newton
D
Watt
5) The SI unit of the work done is:
A
Kilogram
B
Newton
C
Watt
D
Joules
6) The work done by an object of weight is 50 N in 10 m:
A
2 N.
B
50 Kg.
C
2 Kg.
D
500 J
7) The work done by a man in 20 seconds is 2000 J. His power is:
A
200 N.
B
100 W
C
40000 J.
D
40000 N.
8) The SI unit of time is:
A
Hour
B
Day
C
Second
D
Minute
9) A force of magnitude F does a work of 200 J along 2 m, then F equals to:
A
100 Kg.
B
400 N.
C
400 Kg.
D
100 N.
10) A 500 watt device works for 1 minutes. The work it does is:
A
5000 J.
B
30000J.
C
600 J.
D
500 J.
*select an answer for all questions
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