Which term describes the forces acting on the car?
1 answer:
You might be interested in
Answer:
The induced current is
Explanation:
From the question we are told that
The number of turns is
The cross-sectional area is
The initial magnetic field is
The magnetic field at time = 1.02 s is
The resistance is
The induced emf is mathematically represented as
The negative sign tells us that the induced emf is moving opposite to the change in magnetic flux
Here is the change in magnetic flux which is mathematically represented as
Where dB is the change in magnetic field which is mathematically represented as
substituting values
Thus
So
The induced current i mathematically represented as
substituting values
Answer:
4.7 x 10³ rad / s
Explanation:
During the time light goes and comes back , one slot is replaced by next slot while rotating before the light source
Time taken by light to travel a distance of 2 x 500 m is
= (2 x 500) / 3 x 10⁸
= 3.333 x 10⁻⁶ s .
In this time period, two consecutive slots come before the source of light one after another by rotation. There are 400 slots so time taken to make one rotation
= 3.333 x 10⁻⁶ x 400
= 13.33 x 10⁻⁴ s
This is the time period so
T = 13.33 X 10⁻⁴
Angular speed
= 2π / T
=
4.7 x 10³ rad / s