✓ 2 MARKS
Numericals
🔥 APPEARED IN 3 BOARD SETS
The threshold voltage of a silicon diode is $0.7 \text{ V}$. It is operated at this point by connecting the diode in series with a battery of $V$ volt and a resistor of $1000 \text{ } \Omega$. Find the value of $V$ when the current drawn is $15 \text{ mA}$.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2025 | Series 55-2 | Set 1 | Question 21 |
| CBSE 2025 | Series 55-2 | Set 2 | Question 17 |
| CBSE 2025 | Series 55-2 | Set 3 | Question 17 |
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)