17. Select the always true statements from the following list a. Parallel plate
ID: 1375009 • Letter: 1
Question
17. Select the always true statements from the following list
a. Parallel plate capacitor: The plates of a parallel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plates must decrease.
b. Dielectric materials: Three reasons for adding a dielectric material between the plates of a capacitor are (1) Dielectrics do not break down (allowing electric charge to flow) as readily as air, so a higher voltage can be applied without charge passing across the gap. (2) A dielectric allows the plates to be placed closer together without touching thus allowing an increased capacitance because the plate separation is less. (3) If a dielectric fills the space between the two conductors, it increases the capacitance
c. Electric potential: Two identical aluminum objects are insulated from their surroundings. If object A has a net positive charge and object B is grounded, then object B is at a lower potential.
d. Equipotential surface: along this surface charges have a net electrostatic force.
e. Electron-volt: unit of force.
a. Parallel plate capacitor: The plates of a parallel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plates must decrease.
b. Dielectric materials: Three reasons for adding a dielectric material between the plates of a capacitor are (1) Dielectrics do not break down (allowing electric charge to flow) as readily as air, so a higher voltage can be applied without charge passing across the gap. (2) A dielectric allows the plates to be placed closer together without touching thus allowing an increased capacitance because the plate separation is less. (3) If a dielectric fills the space between the two conductors, it increases the capacitance
c. Electric potential: Two identical aluminum objects are insulated from their surroundings. If object A has a net positive charge and object B is grounded, then object B is at a lower potential.
d. Equipotential surface: along this surface charges have a net electrostatic force.
e. Electron-volt: unit of force.
Explanation / Answer
b. Dielectric materials: Three reasons for adding a dielectric material between the plates of a capacitor are (1) Dielectrics do not break down (allowing electric charge to flow) as readily as air, so a higher voltage can be applied without charge passing across the gap. (2) A dielectric allows the plates to be placed closer together without touching thus allowing an increased capacitance because the plate separation is less. (3) If a dielectric fills the space between the two conductors, it increases the capacitance
d. Equipotential surface: along this surface charges have a net electrostatic force.
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