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Electricity And Magnetism
Test Description: Electricity and Magnetism Grade 8
Instructions: Answer all questions to get your test result.
1) A circuit that has always has one path for current.
A
Parallel
B
Electronic
C
Series
D
Open
2) Which device changes mechanical energy to electrical?
A
Generator
B
Motor
C
Light bulb
D
Chemical Cell (battery)
3) If resistance increases in a series circuit, what happens to the current?
A
Current reverses direction
B
Current increases
C
Current decreases
D
Current stays the same
4) What are the 3 essential parts of a circuit?
A
Wires, switch, resistor
B
Energy source, switch, resistor
C
Energy source, wires, resistor
D
Energy source, wires, switch
5) If one light bulb goes out in this circuit, the other bulbs stay lit.
A
series
B
parallel
6) A magnet that moves in a coil of wire will make _____________
A
a chemical reaction
B
an electric current in the wire
C
a magnetic field
7) What converts electrical energy into mechanical energy?
A
A chemical cell
B
A generator
C
A motor
8) An example of a series circuit would be
A
a computer keyboard
B
a burglar alarm
C
wiring in a house
9) An example motor is
A
A fan
B
A wind-up radio
C
A wind turbine
D
A powerplant
10) Which material could be used as a substitute for a wire?
A
A plastic straw
B
A rubber eraser
C
Air
D
A copper penny
*select an answer for all questions
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