WorksheetsVoltage, Current, and Resistance
Total questions: 12
Worksheet time: 6mins
The potential difference between two points, A and B, in an electric field is 2.00 volts. The energy required to move a charge of 8.00 x 10-19 coulomb from point A to point B is
2.50 x 1018 J
1.60 x 10-18 J
6.25 x 1017 J
4.00 x 10-19 J
Copper is a metal commonly used for electrical wiring in houses. Which metal conducts electricity better than copper at 20oC?
nichrome
gold
silver
aluminum
The diagrams above represent four pieces of copper wire at 20.oC. For each piece of wire, L represents a unit of length and A represents a unit of cross-sectional area.
The piece of wire that has the greatest resistance is
wire 1
wire 2
wire 3
wire 4
How much work is required to move 3.0 coulombs of electric charge a distance of 0.010 meter through a potential difference of 9.0 volts?
3.0 x 10-2 J
3.0 J
27 J
2.7 x 103 J
The electronvolt is a unit of
energy
electric potential difference
charge
electric field strength
Which combination of units can be used to express electrical energy?
volt × coulomb ×second
volt×coulomb
voltcoulomb
coulombvolt
Which object will have the greatest change in electrical energy?
an electron moved through a potential difference of 4.0 V
a metal sphere with a charge of 1.0 x 10-9 C moved through a potential difference of 2.0 V
a metal sphere with a charge of 1.0 x 10-9 C moved through a potential difference of 4.0 V
an electron moved through a potential difference of 2.0 V
Moving 4.0 coulombs of charge through a circuit requires 48 joules of electric energy. What is the potential difference across this circuit?
190 V
12 V
4.0 V
48 V
An MP3 player draws a current of 0.120 ampere from a 3.00-volt battery. What is the total charge that passes through the player in 900. seconds?
324 C
108 C
1.80 C
5.40 C
What is the current in a wire if 3.4 x 1019 electrons pass by a point in this wire every 60. seconds?
11 A
3.1 x 10-11 A
9.1 x 10-2 A
1.8 x 10-18 A
What is the resistance of a 20.0-meter long tungsten rod with cross-sectional area of 1.00 x 10-4 meters2 at 20oC?
112 ohms
1.12 x 10-2 ohms
89.3 ohms
2.80 x 10-5 ohms
The resistance of a circuit remains constant. Which graph best represents the relationship between the current in the circuit and the potential difference provided by the battery?
