If a dielectric is inserted bw the plates of a 20 microfarad capacitor, it's capacitance will be A. Remain same
B. Be doubled
C. Be halved
D. Become zero
(Ans with explanation please)

will be doubled

Explanation:

This is because when a dielectric material is inserted between the plates of capacitors the capacitance increases to

c = ke Co .

where ke is called the dielectric constant and Co is the capacitance without a dielectric material

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

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