PHY6

what does an ohmeter measure

• the resistance of a circuit element

• the voltage between two points in circuits

• the current at some point in the circuit

• ohm's law

what does an ammeter measure

• the resistance of a circuit element

• the voltage between two points in a circuit

• the current at some point in the circuit

• ohm's law

what does a voltmeter measure

• the resistance of a circuit element

• the current at some point in the circuit

• the voltage between two points in a circuit

• ohm's law

if an ammeter is placed in series it is measuring the

• actual current

• actual voltage

• actual capacitance

• actual resistance

how do dielectrics affect capacitors connected to a voltage source (battery)

• dielectrics lower the electric field leading to a decrease in voltage and a decrease in capacitance

• dielectrics reduce the electric field in the capacitor

• dielectrics maintain voltage because its hooked up to an internal voltage source

• an increase in charge on plates of the capacitor

• dielectrics maintain voltage because its hooked up to an external voltage source

how do dielectrics affect isolated capacitors

• decrease the voltage and capacitance

• increase the voltage and capacitance

• lower the electric field

• decrease the voltage and increase in capacitance

lowest dielectric constant and the material it belongs to

• when there is charge between the plates of a capacitor

• vacuum

• when there is nothing between the plates of the capacitor

• zero

as the electric field between the plates in a capacitor increases...

• the capacitance increases

• the capacitance decreases

• the charge increases

• the charge decreases

how do dielectric materials work?

• inserted in between the plates of a capacitor in order to increase the capacitance

• decrease the strength of electric field between plates in order to increase the capacitance

• inserted in between the plates of a capacitor in order to decrease the capacitance

• decrease the strength of the electric field between plates in order to decrease the capacitance

• reduces energy stored in capacitor

what is a dielectric material

• insulator

• glass

• air

• plastic