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Toutes les jeux
Jouer Froggy Jumps
1. Mark which of the following statements is correct.
A
Electrons have a positive charge.
B
Protons have a positive charge.
C
Neutrons orbit around the nucleus.
2. What is the symbol for a switch?
A
B
C
3. What is the current in a circuit with a 3 volt battery and a 3 ohm resistor?
A
1 amp
B
2 amp
C
0'1 amp
4. This is the device that turns electrical energy into another form of energy.
A
Generator.
B
Conductor.
C
Load.
5. There are three types of materials:
A
Conductors, insulators anda semi-conductor.
B
There are only conductors and insulators.
C
All materials are conductors.
6. Which of the following materials is an insulator?
A
Rubber.
B
Steel.
C
Copper.
7. The oderly movement of electrons from a negatively-charged body to a positively charged body is called:
A
Electrical current.
B
Electricity.
C
Generator.
8. It produces the difference in electrical charge needed to keep the electrons flowing from one point in the circuit to another.
A
Load.
B
Generator.
C
Current.
9. It is defined as the number of electrons that pass throught a conductor in a specific period of time.
A
Voltage (V).
B
Current (I).
C
Electrical resistance (R).
10. Ohm's law states the following relationship between the 3 fundamental electrical magnitudes:
A
I = R/V
B
I = R · V
C
I = V/R