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3 years ago

Which is better, forward bias or reverse bias, and why ?!

Physics

1 answer:

madam [21]3 years ago

6 0

Answer:

reverse bias

Explanation:

bcz the potential barrier and impedes the flow of charge carriers. In contrast, a forward bias weakens the potential barrier, thus allowing current to flow more easily across the junction.

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Suppose electrons in a TV tube are accelerated through a potential difference of 2.00 104 V from the heated cathode (negative el

Ivanshal [37]

Answer:

83816746.4254 m/s

Explanation:

m = Mass of electron = $9.11\times 10^{-31}\ kg$

q = Charge of electron = $1.6\times 10^{-19}\ C$

V = Voltage = $2\times 10^4\ V$

The kinetic energy of the electron is

$K=\dfrac{1}{2}mv^2$

Energy is given by

$E=qV$

Balancing the energy

$qV=\dfrac{1}{2}mv^2\\\Rightarrow v=\sqrt{\dfrac{2qV}{m}}\\\Rightarrow v=\sqrt{\dfrac{2\times 1.6\times 10^{-19}\times 2\times 10^4}{9.11\times 10^{-31}}}\\\Rightarrow v=83816746.4254\ m/s$

The velocity of the electrons is 83816746.4254 m/s

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3 years ago

Calculate the amount of charge necessary to exert a force of 35 N in an electric field of 300 N/C.

densk [106]

Answer:

The amount of charge is "0.117 C" i.e., option A.

Explanation:

The given values are:

Force,

$\vec{F}$ = 35 N

Electric field,

$\vec{E}$ = 300 N/C

Charge,

q = ?

As we know,

⇒ $\vec{F}=q\vec{E}$

On substituting the given values in the above formula, we get

⇒ $35=q\times 300$

⇒ $q=\frac{35}{300}$

⇒ $q=0.117 \ C$

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Diano4ka-milaya [45]

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4 years ago

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Distinguish between refraction and diffraction

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4 years ago

Which is better, forward bias or reverse bias, and why ?!​

Which is better, forward bias or reverse bias, and why ?!