CBSE 2023 · Region 4 · Set 1 · Q16 · 1 mark
Assertion (A) : When three electric bulbs of power $\displaystyle 200 \mathrm{~W}, 100 \mathrm{~W}$ and $\displaystyle 50$ W are connected in series to a source, the power consumed by the $\displaystyle 50$ W bulb is maximum.
Reason (R): In a series circuit, current is the same through each bulb, but the potential difference across each bulb is different.
Official answer
From CBSE’s own marking scheme for this paper.
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Current ElectricityElectrical Energy, PowerAnalyseassertion_reasonmedium
More from Current Electricity
- A steady current flows through a metallic wire whose area of cross-section increases continuously from one…2023 · asked 3×
- (i) Define mobility of electrons. Give its SI units. (ii) A steady current flows through a wire AB, as shown…2023 · asked 3×
- What is the order of magnitude of drift velocity of electrons in a conductor? Deduce the relation between the…2026 · asked 3×
- A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a…2026 · asked 3×
- What is meant by 'relaxation time' of free electrons in a conductor? Show that the resistance of a conductor…2024 · asked 3×
- Two batteries of emf's 3 V \& 6 V and internal resistances 0.2 Ω & 0.4 Ω are connected in parallel. This…2025 · asked 3×
- Four resistors, each of resistance R and a key K are connected as shown in the figure. The equivalent…2025 · asked 3×
- An electric iron rated 2‧2 kW, 220V is operated at 110 V supply. Find: (i) its resistance, and (ii) heat…2026 · asked 3×
CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.