<span>If an inductor is connected across an ac source and suppose the frequency of the source is doubled, then t</span>he inductive reactance of the inductor is also doubled. The inductive reactance (XL) is the t<span>he opposition to current flowing through a coil in an AC circuit, the </span>impedance measured in Ohms and can be calculated with the following formula:
XL=2*pi*f*L,
where f is the frequency. So, if the frequency is doubled than also the inductive reactance is doubled.
Answer:
Food, clothes, language, and belief
<span>Scientists believe that the earliest state of the universe was hot and dense. So I think this is false.</span>
For every action there is an equal and opposite reaction. Newton's Third Law of Motion.
Answer:
<em>The cyclist takes 10 seconds to accelerate to 12 m/s.</em>
Explanation:
<u>Constant Acceleration Motion</u>
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:
Solving for t:
The cyclist starts from rest (vo=0) and moves at vf=12 m/s with an acceleration .
Calculate the time:
The cyclist takes 10 seconds to accelerate to 12 m/s.