A.   4Q

B.   Q

C.   Q/2

D.   2Q

A.   The potential difference between the plates increases.

B.   The potential difference between the plates decreases.

C.   The potential difference between the plates stays the same.

D.   More information is needed to answer this question.

A.   4.40×10−3 C

B.   3.50×10−5 C

C.   4.50×10−4 C

D.   5.40×10−5 C

A.   A capacitor consists of a single sheet of a conducting material placed in contact with an insulating material. The electric field between the plates of a parallel-plate capacitor is uniform.

B.   A capacitor consists of a single sheet of a conducting material placed in contact with an insulating material. A capacitor is a device that stores electric potential energy and electric charge.

C.   A capacitor is a device that stores electric potential energy and electric charge. The electric field between the plates of a parallel-plate capacitor is uniform. The capacitance of a capacitor depends upon its structure.

D.   The capacitance of a capacitor depends upon its structure. A capacitor consists of a single sheet of a conducting material placed in contact with an insulating material.

A.   Decreasing the area of the plates will increase the capacitance of a parallel-plate capacitor. Increasing the area of the plates will increase the capacitance of a parallel-plate capacitor.

B.   Increasing the separation between the plates will increase the capacitance of a parallel-plate capacitor. Decreasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.

C.   Decreasing the area of the plates will increase the capacitance of a parallel-plate capacitor. Increasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.

D.   Increasing the area of the plates will increase the capacitance of a parallel-plate capacitor. Decreasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.

A.   The electric field between the plates becomes zero.

B.   The strength of the electric field remains constant.

C.   The strength of the electric field decreases during this process.

D.   The electric field between the plates becomes infinite.

E.   The strength of the electric field increases during this process.

A.   The amount of charge on the plates increases during this process.

B.   The amount of charge on the plates becomes zero.

C.   The amount of charge remains constant.

D.   The amount of charge on the plates decreases during this process.

A.   The insertion of a dielectric material between the two conductors in a capacitor allows a higher voltage to be applied to the capacitor. Dielectrics allow electric charge to flow as easily as they do in air.

B.   After the space between the two conductors in a capacitor is filled with a dielectric material, the capacitance of the capacitor decreases. The insertion of a dielectric material between the two conductors in a capacitor allows the plates of the capacitor to be placed closer together without touching.

C.   After the space between the two conductors in a capacitor is filled with a dielectric material, the capacitance of the capacitor decreases. Dielectrics allow electric charge to flow as easily as they do in air.

D.   The insertion of a dielectric material between the two conductors in a capacitor allows a higher voltage to be applied to the capacitor. The insertion of a dielectric material between the two conductors in a capacitor allows the plates of the capacitor to be placed closer together without touching.

A.   The capacitance is not altered, because the structure remains unchanged.

B.   The capacitance decreases because of the insertion of the Teflon®

C.   The capacitance increases because of the insertion of the Teflon®

D.   The capacitance becomes infinite after the insertion of the Teflon®

E.   The capacitance becomes zero after the insertion of the Teflon®

A.   The voltage becomes zero after the insertion of the Teflon®

B.   The voltage decreases because of the insertion of the Teflon®

C.   The voltage becomes infinite because of the insertion of the Teflon®

D.   The voltage increases because of the insertion of the Teflon®

E.   The voltage is not altered, because the structure remains unchanged.

A.   The electric field decreases because of the insertion of the Teflon®

B.   The electric field increases because of the insertion of the Teflon®

C.   The electric field becomes zero after the insertion of the Teflon®

D.   The electric field is not altered, because the structure remains unchanged.

E.   The electric field becomes infinite because of the insertion of the Teflon®

A.   The energy stored in the capacitor remains constant.

B.   The energy stored in the capacitor is decreased to one-half of its original value.

C.   The energy stored in the capacitor doubles its original value.

D.   The energy stored in the capacitor is decreased to one-fourth of its original value.

E.   The energy stored in the capacitor quadruples its original value.

A.   The energy stored in the capacitor is decreased to one-fourth of its original value.

B.   The energy stored in the capacitor quadruples its original value.

C.   The energy stored in the capacitor doubles its original value.

D.   The energy stored in the capacitor remains constant.

E.   The energy stored in the capacitor is decreased to one-half of its original value.