AC motors work a slightly different way: they pass alternating current through opposing pairs of magnets to create a rotating magnetic field, which "induces" (creates) a magnetic field in the motor's rotor, causing it to spin around. You can read more about this in our article on AC induction motors.
As they evolved and adapted, those of the fittest survived to reproduce. Those that did not adapt, died.
The object is farther away then two principles focal lengths from the concave lens
Answer:
Translation: The theory of perception in brain ability
Answer:
The magnitude of average emf is 9.813 mV.
Explanation:
Given that,
Number of turns = 25 turns
Diameter = 1.00 m
Magnetic field = 50.0μm
Time = 0.200 s
Angle = 180°
We need to calculate the area of the coil
Using formula of area
We need to calculate the average emf
Using formula of emf
Where, N = number of turns
A = Area
B = magnetic field
Put the value into the formula
Hence, The magnitude of average emf is 9.813 mV.