Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A dielectric of dielectric constant $$K$$ is introduced such that half of its area of a capacitor of capacitance $$C$$ is occupied by it. The new capacity is

A
$$2 C$$
B
$$\frac{C}{2}$$
C
$$\frac{(1+K) C}{2}$$
D
$$2 C(1+K)$$
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the figure below, the capacitance of each capacitor is $$3 \mu \mathrm{F}$$. The effective capacitance between $$A$$ and $$B$$ is

COMEDK 2023 Morning Shift Physics - Capacitor Question 6 English

A
$$\frac{3}{4} \mu \mathrm{F}$$
B
$$3 \mu \mathrm{F}$$
C
$$6 \mu \mathrm{F}$$
D
$$5 \mu \mathrm{F}$$
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $$C$$ be the capacitance and $$V$$ be the electric potential, then the dimensional formula of $$\mathrm{CV}^2$$ is

A
$$\left[\mathrm{ML}^2 \mathrm{~T}^{-2} \mathrm{~A}^0\right]$$
B
$$\left[\mathrm{MLT}^{-2} \mathrm{~A}^{-1}\right]$$
C
$$\left[\mathrm{M}^0 \mathrm{LT}^{-2} \mathrm{~A}^0\right]$$
D
$$\left[\mathrm{ML}^{-3} \mathrm{TA}\right]$$
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

COMEDK 2023 Evening Shift Physics - Capacitor Question 5 English

In the figure, first the capacitors are fully charged by closing the key $$\mathrm{K}$$. Then after opening the Key a dielectric material with dielectric constant 2 is filled in the space between the plates of both the capacitor. At this state the ratio of the Charge on the capacitor $$C_1$$ to that of $$C_2$$ is:

A
1 : 1
B
3 : 2
C
2 : 1
D
1 : 2
COMEDK Subjects