Physics is a very interesting subject as we understand it properly then we could get answers to many questions which we had since childhood and are still kept unanswered. So let us look at some very interesting questions along with their brief answers.
1.
Difference between rotary &
circular motion?
The objects rotate around their axis in rotary motion, i.e., when we spin a top.
2.
How is bell rings affected when used
in A.C current in place of D.C current?
Say i.e., if we use ac current source instead of the DC battery then the core of the electromagnet would get magnetized but the polarity at its end would change and hence the attraction of armature does not depend on the polarity, the bell would still ring.
3.
Define gravitational constants and
what is their value?
It is a proportionality constant that is used
in newton’s law of gravitation, the force of attraction between any two-unit
masses separated by a unit distance is called gravitational
constants
Its value is G = 6.67408 × 10-11 N m2 /Kg2
4. What is the value of ‘g’ at different points?
‘g’ is the acceleration due to gravity, which is experienced by a freely falling object due to the gravitational force of a massive body,
g=GM/R2 (M= Mass of the massive body,
R=Radius of the massive body)
Mass of the Earth is 6 × 1024 Kg. The radius of Earth is 6.4 × 106m
g earth=9.8, on g Venus = 8.83, g Jupiter =26
5. Define
Load or Voltage?
It is the difference in electric
potential between two points, or it is the work done in moving charge from one
pole to another by using wire, its S.I unit is volt(v) = P/I Watt/Ampere
... read more
--- !!! Happy Reading !!!---
Please do leave your comment below in the comment section
Your feedback is always welcome.
© punchTank
Comments
Post a Comment