1
JEE Main 2019 (Online) 10th April Morning Slot
+4
-1
Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capacitances are :
A
40 $$\mu$$F and 10 $$\mu$$F
B
60 $$\mu$$F and 40 $$\mu$$F
C
20 $$\mu$$F and 30 $$\mu$$F
D
50 $$\mu$$F and 30 $$\mu$$F
2
JEE Main 2019 (Online) 9th April Evening Slot
+4
-1
The parallel combination of two air filled parallel plate capacitors of capacitance C and nC is connected to a battery of voltage, V. When the capacitors are fully charged, the battery is removed and after that a dielectric material of dielectric constant K is placed between the two plates of the first capacitor. The new potential difference of the combined system is :-
A
V
B
$${V \over {K + n}}$$
C
$${{(n+1)V} \over {K + n}}$$
D
$${{nV} \over {K + n}}$$
3
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
Determine the charge on the capacitor in the following circuit :
A
200μC
B
2μC
C
10μC
D
60μC
4
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
A capacitor with capacitance 5μF is charged to 5μC. If the plates are pulled apart to reduce the capacitance to 2μF, how much work is done ?
A
2.16 × 10–6 J
B
2.55 × 10–6 J
C
3.75 × 10–6 J
D
6.25 × 10–6 J
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