Answer:
Current is in phase with voltage in a resistive circuit. Note that the wave form for power is always positive, never negative for this resistive circuit. This means that power is always being dissipated by the resistive load, and never returned to the source as it is with reactive loads.Explanation:
Answer:
we need to see the answers but probably 1 or -1
<h2>
Answer:</h2><h2>
It is due to a refractment of light.</h2>
Sound moves faster in warmer air than colder air the way bends away from the warm air and back towards of air.
Answer:
There are 756.25 electrons present on each sphere.
Explanation:
Given that,
The force of repression between electrons, ![F=3.33\times 10^{-21}\ N](https://tex.z-dn.net/?f=F%3D3.33%5Ctimes%2010%5E%7B-21%7D%5C%20N)
Let the distance between charges, d = 0.2 m
The electric force of repulsion between the electrons is given by :
![F=k\dfrac{q^2}{r^2}](https://tex.z-dn.net/?f=F%3Dk%5Cdfrac%7Bq%5E2%7D%7Br%5E2%7D)
![q=\sqrt{\dfrac{Fr^2}{k}}](https://tex.z-dn.net/?f=q%3D%5Csqrt%7B%5Cdfrac%7BFr%5E2%7D%7Bk%7D%7D)
![q=\sqrt{\dfrac{3.33\times 10^{-21}\times (0.2)^2}{9\times 10^9}}](https://tex.z-dn.net/?f=q%3D%5Csqrt%7B%5Cdfrac%7B3.33%5Ctimes%2010%5E%7B-21%7D%5Ctimes%20%280.2%29%5E2%7D%7B9%5Ctimes%2010%5E9%7D%7D)
![q=1.21\times 10^{-16}\ C](https://tex.z-dn.net/?f=q%3D1.21%5Ctimes%2010%5E%7B-16%7D%5C%20C)
Let n are the number of excess electrons present on each sphere. It can be calculated using quantization of charges. It is given by :
q = ne
![n=\dfrac{q}{e}](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7Bq%7D%7Be%7D)
![n=\dfrac{1.21\times 10^{-16}}{1.6\times 10^{-19}}](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7B1.21%5Ctimes%2010%5E%7B-16%7D%7D%7B1.6%5Ctimes%2010%5E%7B-19%7D%7D)
n = 756.25 electrons
So, there are 756.25 electrons present on each sphere. Hence, this is the required solution.