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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
Electronic
B
Parallel
C
Series
D
Open
2) Which device changes mechanical energy to electrical?
A
Light bulb
B
Chemical Cell (battery)
C
Generator
D
Motor
3) If resistance increases in a series circuit, what happens to the current?
A
Current increases
B
Current decreases
C
Current stays the same
D
Current reverses direction
4) What are the 3 essential parts of a circuit?
A
Energy source, wires, resistor
B
Energy source, wires, switch
C
Energy source, switch, resistor
D
Wires, switch, resistor
5) If one light bulb goes out in this circuit, the other bulbs stay lit.
A
parallel
B
series
6) A magnet that moves in a coil of wire will make _____________
A
a magnetic field
B
a chemical reaction
C
an electric current in the wire
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
wiring in a house
C
a burglar alarm
9) An example motor is
A
A wind-up radio
B
A fan
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
A copper penny
D
Air
*select an answer for all questions
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