Electricity And Magnetism Question Preview (ID: 39392)


Electricity And Magnetism Grade 8. TEACHERS: click here for quick copy question ID numbers.

A circuit that has always has one path for current.
a) Series
b) Parallel
c) Electronic
d) Open

Which device changes mechanical energy to electrical?
a) Motor
b) Generator
c) Chemical Cell (battery)
d) Light bulb

If resistance increases in a series circuit, what happens to the current?
a) Current stays the same
b) Current increases
c) Current decreases
d) Current reverses direction

What are the 3 essential parts of a circuit?
a) Energy source, wires, switch
b) Energy source, wires, resistor
c) Wires, switch, resistor
d) Energy source, switch, resistor

If one light bulb goes out in this circuit, the other bulbs stay lit.
a) parallel
b) series
c)
d)

A magnet that moves in a coil of wire will make _____________
a) a magnetic field
b) an electric current in the wire
c) a chemical reaction
d)

What converts electrical energy into mechanical energy?
a) A motor
b) A generator
c) A chemical cell
d)

An example of a series circuit would be
a) wiring in a house
b) a burglar alarm
c) a computer keyboard
d)

An example motor is
a) A fan
b) A wind turbine
c) A powerplant
d) A wind-up radio

Which material could be used as a substitute for a wire?
a) A plastic straw
b) Air
c) A rubber eraser
d) A copper penny

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