Properties of Charge
This law states that the total electric charge in an isolated system never changes and that electric charge cannot be created or destroyed. What is the name of this law?
Law of Conservation of Charge
If two negative charges get close together or two positive charges get close together. What will they do?
Repel
What is the formula for Ohm's Law?
V = IR
The total current entering a junction is equal to the total current leaving that junction. What is the name of this law?
Kirchhoff's Current Law
If many electrons are spinning in alignment and are not changing their locations. What is the name of this object?
Permanent Magnet
Charges are not allowed to move freely. What is the name of this material that resists the flow of electric charge?
Insulators
The electric field lines point inward, this also can be referred to as a sink. What is this?
Negative charge (electron)
You have a simple circuit with 2.3 Amps of current and 4 ohms of resistance. What is the voltage in this circuit?
9.2 V
The sum of all the voltages around a closed loop is equal to zero. What is the name of this law?
Kirchhoff's Voltage Law
If electrons are moving through loops of tightly wrapped copper coil of N = 10 turns. What is the name of this object?
Electromagnet (Solenoid)
All of the charges on this material exist on the outside edge. The center of this material has zero charges. What is the name of this material?
Conductors
You have four electrons packed together tightly in one space. What would be the electric potential difference these electrons exert on a point in space 1 mile away?
3.5 * 10-12 V
You have a simple series circuit with a resistor of 5 ohms and an unknown resistor. If I connect a 10 volt battery and I measure a current of 1.25 Amps. What is the resistance of this unknown resistor?
3 Ohms
A circuit has a junction of three branches where 5 amps of current is going into the junction and 8 amps of current is exiting out on one branch of the junction. What is the current on the third branch of the junction?
- 3 A
You have a solenoid with a length of 40 centimeters and it has 13 turns. If the current flowing through the solenoid is 1.35 amps. What is the magnitude of magnetic field inside the solenoid?
5.51*10-5 T
After the nuclear disaster of Fukushima, the local fish carry cesium ions which have a charge of +1e. These cesium ions came from uranium that had a charge of +3e. What would be the charge of an alpha particle from this uranium?
+2e
You have an electron at coordinates (0 m, 0 m) and a proton at coordinates (1 m, 0 m). What is the magnitude of the electric field produced at the point P with coordinates (0.5 m, 0 m)?
1.15 * 10-8 N/C
If you have two resistors connected in series with one resistor being 3 ohms and the other resistor being 7 ohms. What current would you measure across each resistor if you connected a 5 volt battery?
0.5 A
You have a simple series circuit with a 2 volt battery, a 2 ohm resistor, and a 3 ohm resistor. What is the voltage on the 3 ohm resistor?
1.2 V
You have two wires that are 10 meters long, 1.5 meters apart, and perfectly parallel. If wire 1 has a current of 3 amps going north and wire 2 has a current of 0.5 amps going north. What is the magnetic force that wire 2 experiences?
2.0*10-6 N
If I have two electrons 50 centimeters apart. How much force is each electron exerting on the other?
9.23*10-28 N
An electron is traveling at 20 m/s east when it enters an electric field of 20 N/C going north. If the electron is in this electric field for 2*10-12 seconds. What is the (north/south) velocity of the electron after entering the electric field?
7.03 m/s
If you have two resistors connected in parallel and you connect a 20 volt battery in parallel to the two resistors. What voltage would you read across each resistor in this circuit?
20 V
You have a simple parallel circuit going from left to right of a 2 volt battery, a 2 ohm resistor, and a 3 ohm resistor. What is the current on the 3 ohm resistor?
0.67 A
You have a copper ring with a resistance of 2 ohms and a diameter of 0.25 meters. If the ring is inside a uniform magnetic field of 3 teslas and I rotate the ring 30 degrees in 0.5 seconds. What would be the magnitude of the induced current inside the ring?
1.97 * 10-2 Amps