1
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A network of capacitors is as shown below. If the voltage supply is 100 V , find the energy stored in the $6 \mu \mathrm{~F}$ capacitor.

COMEDK 2025 Evening Shift Physics - Capacitor Question 1 English

$C_1=3 \mu F, C_2=6 \mu F, C_3=3 \mu F$ and $C_4=4 \mu F$

A
1.2 mJ
B
12 mJ
C
2.2 mJ
D
4.2 mJ
2
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
A capacitor of capacitance $4 \mu \mathrm{~F}$ is charged to a potential of 24 V and then connected in parallel to an uncharged capacitor of capacitance $6 \mu \mathrm{~F}$. The final potential difference across each capacitor will be:
A
6.9 V
B
8.2 V
C
9.6 V
D
7.4 V
3
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
When a dielectric slab of dielectric constant $\mathrm{k}=2$ is used to fill the space between the plates of a parallel plate capacitor, the capacitance of the capacitor is found to be $20 \mu \mathrm{~F}$. What will be the capacitance when the slab is replaced with air?
A
$10 \mu F$
B
$40 \mu F$
C
$20 \mu F$
D
$5 \mu F$
4
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
By connecting two given capacitors, a technician was able to make two new capacitors having the effective capacitance $12.5 \mu \mathbf{F}$ and $2 \mu \mathbf{F}$. What would be the capacitance of the given capacitors?
A
$8.5 \mu \mathrm{~F}$ and $4 \mu \mathrm{~F}$
B
$10 \mu \mathrm{~F}$ and $2.5 \mu \mathrm{~F}$
C
$6.5 \mu \mathrm{~F}$ and $6 \mu \mathrm{~F}$
D
$10.5 \mu \mathrm{~F}$ and $2 \mu \mathrm{~F}$
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