Answer:
Option B. doubles
Explanation:
This can be explained by the definition of capacitance that charge on the capacitor will remain constant irrespective of the voltage applied.
This can be given as:
Q ∝ V or Q = CV
where,
Q = charge
V = Voltage
C = Capacitance
So, when V is doubled, C shoul reduce to half to main constant charge on the capacitor:
V' = 2V
C' = ![\frac{1}{2}C](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DC)
Also , Energy stored in a capacitor, E is given by:
E =
(1)
Now, when
V' = 2V
C' = ![\frac{1}{2}C](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DC)
Using eqn (1):
E' = ![\frac{1}{2}C'V'^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DC%27V%27%5E%7B2%7D)
Energy, E' =
E' =
= 2E
Answer:
Grounding a Positively Charged Object
Electrons were transferred from the electroscope to the ground. As in the case of grounding a negatively charged electroscope, the grounding of a positively charged electroscope involves charge sharing. The excess positive charge is shared between the electroscope and the ground.
Explanation:
An object becomes negatively charged when It gains electrons. Option A is correct.
<h3>What is an atom?</h3>
The atom consists of matter that may be split without releasing electrical charges.
It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.
In the nucleus proton and the neutron is exists. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.
An object becomes negatively charged when It gains electrons. Because the electron is a negative cahrge particle.
Hence, option A is correct.
To learn more about the atom refer to the link;
brainly.com/question/1566330
#SPJ1
When water vaporizes into the air, it becomes humid out.