Question

An air-filled parallel-plate capacitor has plates of area 0.47 cm² separated by 4.1 mm. The capacitor is conected to a 12-V battery.

(a) Find the value of its capacitance

0.355  F

0.152  F

0.072  F

0.101  F

(b) What is the charge on the capacitor?

0.008  C

1.217  C

1.826  C

12.00  C

(c) What is the magnitude of the uniform electric field between the plates?

3.42 N/C

2,926.83 N/C

1,463.41 N/C

12 N/C

(d) Find the magnitude of the charge density on each plate.

1.363 C/m²

7.382 C/m²

3.885 C/m²

2.590 C/m²

e) Without disconnecting the battery, the plates are moved farther apart. Qualitatively, what happens to each of the previous answers?

Capacitance, charge stored, and electric field strength increases

Capacitance and charge stored increases, while electric field strength decreases

Capacitance, charge stored, and electric field strength decreases

Capacitance and charge stored decreases, while electric field strength increases

Answer 1