Assertion (A): Drift velocity of electrons is proportional to the applied electr

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Question
Assertion (A): Drift velocity of electrons is proportional to the applied electric field E.
Reason (R): The average drift velocity per unit field is called mobility.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

Correct Answer

Both A and R are true but R is not correct explanation of A

More questions

2. What are the values of E_max and E_min displayed on the oscilloscope, when a 1 kV P-P carries is modulated to 50%?
Options
A. 2 kV, 0.5 kV
B. 1 kV, 0.5 kV
C. 0.75 kV, 0.25 kV
D. 0.5 kV, 1.5 kV

3. For air filled circular waveguides
Options
A. the attenuation due to imperfect conducting walls is negligible
B. the attenuation due to imperfect dielectric is negligible
C. both the attenuation i.e. due to imperfect conducting walls and due to imperfect dielectric are significant
D. the total attenuation is almost zero

4. When .4546 E 5 and .5433 E 7 are to be added in normalized floating point mode
Options
A. none of the numbers is changed to any other form
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5. A short circuited stub is preferred to an open circuited stub because an open circuited stub
Options
A. is more difficult to fabricate and construct
B. is made of transmission line of different Z₀
C. is liable to radiate
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6. As compared to an ordinary semiconductor diode, a Schottky diode
Options
A. has lower cut in voltage
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Options
A. an infinite impedance in shunt with line
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D. a finite impedance in shunt with line

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