1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two parallel plates with dielectric placed between the plates are as shown in figure. The resultant capacity of capacitor will be [A = area of plate. $$t_1, t_2$$ and $$t_3$$ are thickness of dielectric slabs, $$\mathrm{k}_1, \mathrm{k}_2$$ and $$\mathrm{k}_3$$ are dielectric constants.

A
$$\frac{A \varepsilon_0}{\left[\frac{t_1+t_2+t_3}{k_1+k_2+k_3}\right]}$$
B
$$\frac{A \varepsilon_0\left(k_1 k_2 k_3\right)}{t_1 t_2 t_3}$$
C
$$A \varepsilon_0\left[\frac{k_1}{t_1}+\frac{k_2}{t_2}+\frac{k_3}{t_3}\right]$$
D
$$\frac{A \varepsilon_0}{\left[\frac{t_1}{k_1}+\frac{t_2}{k_2}+\frac{t_3}{k_3}\right]}$$
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In parallel plate capacitor, electric field between the plates is '$$E$$'. If the charge on the plates is '$$Q$$' then the force on each plate is

A
QE
B
$$\frac{\mathrm{QE}^2}{2}$$
C
$$\mathrm{QE}^2$$
D
$$\frac{\mathrm{QE}}{2}$$
3
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the charge on the capacitor is increased by 2 C the energy stored in it increased by 21%. Total original charge on the capacitor is

A
10 C
B
5 C
C
20 C
D
15 C
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

When the battery across the plates of a charged condenser is disconnected and a dielectric slab is introduced between its plates then the energy stored

A
becomes infinity
B
does not change
C
increases
D
decreases
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