What must happen to the electrons in a material to create an electric current?

2 answers:

4 0

<span>The electrons need to migrate from a region of lower electric potential to a region of higher electric potential. This flow of electrons is known as electron current (which is contrary to the widely-accepted perspective of conventional current).</span>

tamaranim1 [39]4 years ago

3 0

Answer:

Explanation:

The rate of flow of charge is called electric current.

When the electrons flows through the conductor due to the applied potential difference then electric current flows through the conductor. The electrons flows from lower potential region to high potential region.

The direction of flow of current is conventionally taken as opposite direction of flow of electrons.

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How much electrical potential energy is stored in a capacitor that has 8.0 × 10-10 C of charge on each plate and a potential dif

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THere is a standard relationship that gives this result where the capacity of the capacitor is used:
$E=1/2* \frac{Q^2}{C}$ .
We know though that Q/c=V and thus we can use the relationship:
E=Q*V/2 where we have just substituted in. If we also take into account that Q=VC, we can also get that E=V^2*C/2.
We are given the charge and the potential, so the best expression to use is the middle one.
Substituting, we get that E=1/2*8*10^(-10)*20=8*10^(-9).

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malfutka [58]

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