Force And Motion 2 Question Preview (ID: 338)


Benchmark Review.

An electric current is a flow of _______________ charges.
a) positive
b) neutral
c) negative
d) potential

A _____________ machine uses many simple and compound machines.
a) complex
b) compound
c) simple
d) friction

When two objects have like charges, they ______________ each other.
a) repel
b) attract
c) look at
d) inertia

A ______________ allows electricity to flow easily.
a) insulator
b) conductor
c) chemical
d) potential

In a ________________ circuit, each light or appliance has its own path.
a) series
b) potential
c) parallel
d) closed

When two objects have opposite charges, they ____________ each other.
a) close
b) repel
c) friction
d) attract

A(n) _______________ does not allow electricity to flow easily.
a) insulator
b) conductor
c) inertia
d) closed circuit

In a ________________ circuit, the electricity has only one path to flow.
a) parallel
b) series
c) adjacent
d) change

When the lights in a room are off, the circuit is ___________.
a) open
b) reduced
c) closed
d) kinetic

An electric circuit must be ___________ for electricity to flow.
a) open
b) closed
c) friction
d) reduced

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