COMEDK 2025 Afternoon Shift | Capacitor Question 4 | Physics

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?

$8.5 \mu \mathrm{~F}$ and $4 \mu \mathrm{~F}$

$10 \mu \mathrm{~F}$ and $2.5 \mu \mathrm{~F}$

$6.5 \mu \mathrm{~F}$ and $6 \mu \mathrm{~F}$

$10.5 \mu \mathrm{~F}$ and $2 \mu \mathrm{~F}$

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

Two capacitors $\mathrm{C}_1$ and $\mathrm{C}_2$ are charged to 100 V and 120 V respectively. It is found that upon connecting them together in parallel, the potential on each one of them is zero. Therefore

$\mathrm{C}_1+3 \mathrm{C}_2=0$

$5 \mathrm{C}_1=3 \mathrm{C}_2$

$5 \mathrm{C}_1+6 \mathrm{C}_2=0$

$5 \mathrm{C}_1=6 \mathrm{C}_2$

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

Figure below shows a network of resistors, cells, and a capacitor at steady state.

COMEDK 2024 Evening Shift Physics - Capacitor Question 7 English

What is the current through the resistance 4 $$\Omega$$ ?

1.0 A

0.2 A

Zero

0.5 A

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

A parallel plate capacitor having a dielectric constant 5 and dielectric strength $$10^6 \mathrm{~V} \mathrm{~m}^{-1}$$ is to be designed with voltage rating of $$2 \mathrm{~kV}$$. The field should never exceed $$10 \%$$ of its dielectric strength. To have the capacitance of $$60 \mathrm{~pF}$$ the minimum area of the plates should be

$$27.1 \times 10^{-4} \mathrm{~m}^2$$

$$2.7 \times 10^{-2} \mathrm{~m}^2$$

$$2.71 \times 10^{-4} \mathrm{~m}^2$$

$$27.1 \times 10^{-2} \mathrm{~m}^2$$

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