@Which of these devices could you use to detect charge?
Electroscope
Joule meter
Wheatstone bridge
@The part of the atom that is responsible for the flow of charge in a wire is the:
Electron
Proton
Neutron
@Metals are good conductors because:
they have many free moving electrons
their atoms can vibrate
they are strong
@If one ampere is flowing through a circuit then:
1 coulomb is flowing each second
There is 1 ohm of resistance in the circuit
Each coulomb carries 1 joule of energy
@If you want more current to flow in an electrical circuit, then you must:
Reduce the resistance
Increase the resistance
Keep changing the resistance
@What current flows if 30 coulombs of charge are moved in 10s?
3 A
30 A
300 A
@What is charge measured in?
Coulombs
Joules
Amperes
@How long will it take 14 Coulombs of charge to flow if the current in a circuit is 2A?
7 seconds
0.14 seconds
98 seconds
@An electrical circuit has 3A of current flowing in it. In 5s, how much charge is there?
15 Coulombs
0.6 Coulombs
1.67 Coulombs
@An electronic component that stores charge is a:
Capacitor
Resistor
Joulemeter
@A capacitor, found in electrical circuits, stores charge. A typical amount of charge one of these devices might store is:
Very much less than 1 Coulomb
About 1 Coulomb
More than 1 Coulomb
@A capacitor is a device that stores charge. What are the units of capacitance?
Farads
Volts
Coulombs
@Which one if these symbols is the correct one for a capacitor?
#char1
Symbol X
Symbol Y
Symbol Z
@A capacitor stores charge; and a common type of capacitor has two metal plates separarted by an insulator. Which statement is correct, when the capacitor is charged?
#char2
One plate has a positive charge, the other negative
The plates have the same charge on them
No charge is actually found on the plates because of the insulator
@A capacitor stores charge; and a common type of capacitor has two metal plates separarted by an insulator. If charged:
#char2
there is an electric field between the plates
a small current flows from the positive to negative plate