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Which of the following results when the equilibrium established in a semiconductor?
- a)Restrain the process of diffusion
- b)Electric field becomes very high
- c)Both a and b
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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Which of the following results when the equilibrium established in a s...
As the electric field is very high, the flow of the carries will be restricted and the equilibrium will be obtained.
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Which of the following results when the equilibrium established in a s...
Equilibrium in a semiconductor refers to the state where the concentration of charge carriers (electrons and holes) is balanced and there is no net flow of charge. In this state, the rates of diffusion and recombination of charge carriers are equal. Let's analyze the given options to understand the results of equilibrium in a semiconductor.
a) Restrain the process of diffusion:
- Diffusion is the process by which charge carriers move from an area of higher concentration to an area of lower concentration. In equilibrium, the rates of diffusion of electrons and holes are equal, resulting in no net diffusion. Therefore, option a) is correct.
b) Electric field becomes very high:
- In equilibrium, the electric field across the semiconductor is not very high. The electric field arises due to the potential difference between the p-type and n-type regions of a semiconductor. It helps in the separation of charge carriers and facilitates the flow of current. However, in equilibrium, the electric field is balanced and does not become very high. Therefore, option b) is incorrect.
c) Both a and b:
- As discussed above, option a) is correct as equilibrium restrains the process of diffusion. However, option b) is incorrect as the electric field does not become very high in equilibrium. Therefore, option c) is incorrect.
d) None of these:
- As explained above, option a) is correct as equilibrium restrains the process of diffusion. Therefore, option d) is incorrect.
In conclusion, the correct answer is option c) - Both a and b. Equilibrium in a semiconductor restrains the process of diffusion, but it does not result in a very high electric field.
a) Restrain the process of diffusion:
- Diffusion is the process by which charge carriers move from an area of higher concentration to an area of lower concentration. In equilibrium, the rates of diffusion of electrons and holes are equal, resulting in no net diffusion. Therefore, option a) is correct.
b) Electric field becomes very high:
- In equilibrium, the electric field across the semiconductor is not very high. The electric field arises due to the potential difference between the p-type and n-type regions of a semiconductor. It helps in the separation of charge carriers and facilitates the flow of current. However, in equilibrium, the electric field is balanced and does not become very high. Therefore, option b) is incorrect.
c) Both a and b:
- As discussed above, option a) is correct as equilibrium restrains the process of diffusion. However, option b) is incorrect as the electric field does not become very high in equilibrium. Therefore, option c) is incorrect.
d) None of these:
- As explained above, option a) is correct as equilibrium restrains the process of diffusion. Therefore, option d) is incorrect.
In conclusion, the correct answer is option c) - Both a and b. Equilibrium in a semiconductor restrains the process of diffusion, but it does not result in a very high electric field.
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Which of the following results when the equilibrium established in a semiconductor?a)Restrain the process of diffusionb)Electric field becomes very highc)Both a and bd)None of theseCorrect answer is option 'C'. Can you explain this answer?
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