Bissoy.com
Doctors Medicines MCQs Q&A

When the electric field applied to GaAs specimen is less than the threshold electric field, the current in the material:

When the electric field applied to GaAs specimen is less than the threshold electric field, the current in the material: Correct Answer increases linearly

When the electric field applied is less than the threshold value of electric field, the electrons jump from the valence band to the primary valley of the conduction band and current increases linearly with electric field.

Related Questions

From the given table, what is the percentage of students scoring 40 or more, but less than 70. Scores Less than 20 Less than 30 Less than 40 Less than 50 Less than 60 Less than 70 Less than 80 No. of Students 12 19 22 31 38 46 50
From the following table, how many patients were in the age group 40 – 60? Age (years) Less than 10 Less than 20 Less than 30 Less than 40 Less than 50 Less than 60 Less than 70 No. of patients 11 15 22 29 35 45 50
In a GaAs n-type specimen, the current generated is constant irrespective of the electric filed applied to the specimen.
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): In Gunn effect, when electric field is varied from zero to a threshold value the drift velocity decreases. Reason (R): Beyond the threshold electric field, if the electric field is increased, the drift velocity is decreased and the diode exhibits negative resistance. In the light of the above statement, choose the most appropriate answer from the options given below:
A GaAs injection laser has a threshold current density of 2.5*103Acm-2 and length and width of the cavity is 240μm and 110μm respectively. Find the threshold current for the device.
Study the table and answer the question. The table shows the daily income of 50 persons. Income (Rs.) No. of persons less than 200 12 less than 250 26 less than 300 34 less than 350 40 less than 400 50 How many persons earn Rs.250 or more but less than Rs.350 daily?
The table shows the daily income of 50 persons. Study the table and answer the question. Income (Rs.) No. of persons less than 200 12 less than 250 26 less than 300 34 less than 350 40 less than 400 50 What is the ratio of the number of persons earning less than Rs. 200 to the number of persons earning Rs. 300 or more?
During a medical check-up, the heights of 40 students in a class were recorded as shown in the following table. Height (in cm) Less than 175 Less than 170 Less than 165 Less than 160 Less than 155 Less than 150 Number of students 40 35 25 16 8 4   How many students have a height of 165 cm or more?
The table shows the daily income (in Rs.) of 50 persons. Study the table and answer the question: Income (Rs) No. of persons Less than 200 12 Less than 250 26 Less than 300 34 Less than 350 40 Less than 400 50 How many persons earn Rs. 200 or more but less than Rs. 300? 
When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?