✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
In an unbiased p-n junction, at equilibrium, which of the following statements is true ?
A
Diffusion current is zero but drift current exists.
B
Diffusion current exists but drift current is zero.
C
Diffusion and drift currents are equal and opposite.
D
Both the diffusion and drift currents exist but are unequal.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 55-1 | Set 1 | Question 12 |
| CBSE 2026 | Series 55-1 | Set 2 | Question 2 |
| CBSE 2026 | Series 55-1 | Set 3 | Question 3 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)