MHT CET 2021 24th September Morning Shift | Capacitor Question 28 | Physics

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

$$\mathrm{C}_2=\frac{C_1}{2}$$

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

$$\mathrm{C}_2=2 \mathrm{C}_1$$

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

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-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

$$\frac{1}{4} C\left(V_1-V_2\right)^2$$

$$\frac{1}{2} C\left(v_1^2+v_2^2\right)$$

$$\frac{1}{2} C\left(V_1^2-V_2^2\right)$$

$$\frac{1}{2} C\left(V_1+V_2\right)^2$$

MHT CET 2021 23rd September Evening Shift

MCQ (Single Correct Answer)

-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

$$1: 3$$

$$27: 1$$

$$3: 1$$

$$9: 1$$

MHT CET 2021 23rd September Evening Shift

MCQ (Single Correct Answer)

-0

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

MHT CET 2021 23rd September Evening Shift Physics - Capacitor Question 7 English

75 $$\mu$$C

150 $$\mu$$C

30 $$\mu$$C

60 $$\mu$$C

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