For a given value (n) of principle quantum number, the number of possible electr

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Materials and Components Comments

Question
For a given value (n) of principle quantum number, the number of possible electronic states are
Options
A. n
B. n²
C. n³
D. n

Correct Answer

n²

Explanation

The total number of states corresponding to a given value of n is equal to

For a given value (n) of principle quantum number, the number of possible electronic states are n n2 (2l + 1) = 1 + 3 + .... + [2(n-1) + 1] = n².

Materials and Components problems

Search Results

2. Semiconductors have a positive temperature coefficient of resistivity.
Options
A. True
B. False

3. Assertion (A): Metals are better heat conductors than insulators.
Reason (R): If is temperature gradient, Q is heat flow density and K is thermal conductivity, then Q = - K (dT/dx).
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

5. High frequency inductors and capacitors are commonly plated with silver. The main purpose of this is to
Options
A. reduce dc resistance
B. reduce ac resistance
C. increase dc resistance
D. increase ac resistance

6. A sheet of bakelite is inserted between the plates of an air capacitor. The capacitance will
Options
A. increase
B. decrease
C. remain the same
D. may increase or decrease

10. Assertion (A): Magnetic susceptibility of copper is -0.5 x 10^-5.
Reason (R): Copper is diamagnetic material.
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

Comments

There are no comments.

More in Electronics and Communication Engineering: