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REY [17]
3 years ago
10

An infinite plane of charge has surface charge density 7.2 μC/m^2. How far apart are the equipotential surfaces whose potential

s differ by 100 V?
Physics
1 answer:
Rina8888 [55]3 years ago
3 0

Answer:

so the distance between two points are

d = 0.246 \times 10^{-3} m

Explanation:

Surface charge density of the charged plane is given as

\sigma = 7.2 \mu C/m^2

now we have electric field due to charged planed is given as

E = \frac{\sigma}{2\epsilon_0}

now we have

E = \frac{7.2 \times 10^{-6}}{2(8.85 \times 10^{-12})}

E = 4.07 \times 10^5 N/C

now for the potential difference of 100 Volts we can have the relation as

E.d = \Delta V

4.07 \times 10^5 (d) = 100

d = \frac{100}{4.07 \times 10^5}

d = 0.246 \times 10^{-3} m

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Answer:

The value of d is 20.4 m.

(C) is correct option.

Explanation:

Given that,

Initial velocity = 20 m/s

Final velocity = 0

We need to calculate the time

Using equation of motion

v = u+gt

Where, u = Initial velocity

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Put the value into the formula

t = \dfrac{20}{9.8}

t= 2.04\ sec

We need to calculate the distance

Using equation of motion

s = ut+\dfrac{1}{2}gt^2

s=0+\dfrac{1}{2}\times9.8\times(2.04)^2

s=20.4\ m

Hence, The value of d is 20.4 m.

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Option C is incorrect because in an isothermal process, the temperature is constant.

Option D is incorrect because in an adiabatic process there is no heat transfer.

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