✓ 3 MARKS
Derivations
🔥 APPEARED IN 3 BOARD SETS
(a) A parallel plate capacitor is charged by an ac source. Show that the sum of conduction current $(\text{I}_\text{c})$ and the displacement current $(\text{I}_\text{d})$ has the same value at all points of the circuit. (b) In case (a) above, is Kirchhoff's first rule (junction rule) valid at each plate of the capacitor ? Explain.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2025 | Series 55-1 | Set 1 | Question 25 |
| CBSE 2025 | Series 55-1 | Set 2 | Question 25 |
| CBSE 2025 | Series 55-1 | Set 3 | Question 25 |
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)