The power of Sun is………watts.
a) 4x1016
b) 4x 1026
c) 4x1036
d) 4x1046
The power of pocket calculator is…….
a) 103W
b) 10-3W
c) 106W
d) 10-6W
The person at rest has a power of……………..
a) 100
b) 200
c) 300
d) 400
The power of electric kettle is 500W and takes 2s to heat up, find the heat generated?
a) 100J
b) 100W
c) 1000W
d) 1000J
Exercise:
Work done will be zero when the angle between force and displacement is………
a) 300
b) 450
c) 600
d) 900
Explanation: W= Fdcosθ and cos(90) = 0. So W=0
