1.) Which of the following changes will increase the capacitance of a parallel-p

Question

1.) Which of the following changes will increase the capacitance of a parallel-plate capacitor? (There could be more than one correct choice.)

A) increase the charge on the plates

B) decrease the poten5al between the plates

C) increase the potential between the plates

D) introduce a dielectric material between the plates

E) decrease the separation between the plates

2.) The potential difference between the plates of an ideal air-filled parallel-plate capacitor with a plate separation of 6.0 cm is 60 V. What is the strength of the electric field between the plates of this capacitor?

A) 60 V/m

B) 500 V/m

C) 1000 V/m

D) 2000 V/m

E) 3600 V/m

3.) 10) An air-filled 20-F capacitor has a charge of 60 C on its plates. How much energy is stored in this capacitor?

A) 70 J

B) 80 J

C) 90 J

D) 100 J

E) 110 J

Explanation / Answer

here,

1)

the capacitance of capacitor , C = K * area * e0 /d

and C = Q/V

so,

to increase the capacitance ,

as dielectric is inserted nad decreasing the sepration between the plates

so the correct options are D) and E)

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