1
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
The resistance of the conductor is $\sqrt{3} \Omega$ the angle made by the V-I graph with the voltage axis is $\theta$
A
$\theta=60^{\circ}$
B
$\theta=30^{\circ}$
C
$\theta=15^0$
D
$\theta=45^{\circ}$
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Across the 220 V source of internal resistance $20 \Omega$, how many lamps of $40 \mathrm{~W}, 100 \mathrm{~V}$ can be connected in parallel so that all the lamps may glow with full brightness.
A
40
B
15
C
30
D
20
3
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Two wires A and B made of same material having length 10 cm and 40 cm respectively are connected in parallel to the same source of emf 10 V . What will be the ratio of the drift velocity of the electrons in the wire $A$ to the drift velocity in the wire $B$ ?
A
$\frac{V_{d A}}{V_{d B}}=1: 4$
B
$\frac{V_{d A}}{V_{d B}}=1: 2$
C
$\frac{V_{d A}}{V_{d B}}=4: 1$
D
$\frac{V_{d A}}{V_{d B}}=2: 1$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
A student measures the terminal potential difference $V$ of a cell (emf $\varepsilon$ and internal resistance $r$ ) as a function of current I flowing through it, and draws V versus I graph. The slope and intercept of the graph respectively are
A
$-r,-\varepsilon$
B
$-r, \varepsilon$
C
$r,-\varepsilon$
D
$r, \varepsilon$
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