1
MHT CET 2021 24th September Morning Shift
+1
-0

The plates of a parallel plate capacitor of capacity '$$\mathrm{C}_1$$' are moved closer together until they ant half their original separation. The new capacitance '$$\mathrm{C}_2$$' is

A
$$\mathrm{C}_2=\frac{C_1}{2}$$
B
$$\mathrm{C}_2=\mathrm{C}_1$$
C
$$\mathrm{C}_2=2 \mathrm{C}_1$$
D
$$\mathrm{C}_2=3 \mathrm{C}_1$$
2
MHT CET 2021 24th September Morning Shift
+1
-0

Two identical capacitors have the same capacitance '$$\mathrm{C}$$'. One of them is charged to potential '$$\mathrm{V_1}$$' and the other to $$\mathrm{V_2}$$. The negative ends of the capacitors are connected together. When positive ends are also connected, the decrease in energy of the combined system is

A
$$\frac{1}{4} C\left(V_1-V_2\right)^2$$
B
$$\frac{1}{2} C\left(v_1^2+v_2^2\right)$$
C
$$\frac{1}{2} C\left(V_1^2-V_2^2\right)$$
D
$$\frac{1}{2} C\left(V_1+V_2\right)^2$$
3
MHT CET 2021 23rd September Evening Shift
+1
-0

If the potential difference across a capacitor is increased from $$5 \mathrm{~V}$$ to $$15 \mathrm{~V}$$, then the ratio of final energy to initial energy stored in the capacitor is

A
$$1: 3$$
B
$$27: 1$$
C
$$3: 1$$
D
$$9: 1$$
4
MHT CET 2021 23rd September Evening Shift
+1
-0

The charge on each capacitor when a voltage source os 15 V is connected in the circuit as shown, is

A
75 $$\mu$$C
B
150 $$\mu$$C
C
30 $$\mu$$C
D
60 $$\mu$$C
EXAM MAP
Medical
NEET