Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
The gravitational attraction will increase.
Answer:
Force = 6.25
so here correct option is a. 6.25
Explanation:
given data
resistance = 0.05 Ω
uniform magnetic field = 0.5 T
time = 0.1 s
to find out
maximum value of the force acting on the bar during that time
solution
we use here Faraday law of induction in the term of current
and solve here for I via the ohms law instead of the emf
That is end up by dividing by resistance
so here I will be
I =
..............1
I =
I = 25 A
and now l is length of 1 side of square when we solving for the force that is
Force = N*I²*B
Force = 1 ×25×0.5×0.5
Force = 6.25
so here correct option is a. 6.25
The efficiency can never be 100 because some of the work will be transferred into thermal energy. In turn, causing the percentage to decrease. This is basically the second law of thermodynamics.