Review: Physics
1st term
Question 1:
Which material(s) can NOT be
a) copper (Cu)
b) nickel (Ni)
c) iron (Fe)
d) cobalt (Co)
Question 2:
Where is the magnetic force
a) At the poles.
b) In the centre.
c) On top.
d) It's equally strong
Question 3:
How can you demagnetize a
a) by rubbing it.
b) by heating it.
c) by shaking it.
d) by colouring it.
Question 4:
What can be used to show the
magnetic field?
a) compass needles
b) paper scraps
c) aluminium
d) iron filings
Question 5:
There is no such thing as...
a) a magnetic field.
b) a magnetic monopole.
c) an electromagnet.
d) a permanent magnet.
Question 6:
Which animals do NOT have a
magnetic sense?
a) elephants
b) sharks
c) pigeons
d) migratory birds
Question 7:
Where does magnetism come
a) from the adhesive forces between
b) from the protons attracting neutrons.
c) from the electrons moving around the
atomic nucleus.
d) from electric current.
Question 8:
How can you magnetize a piece of
a) by placing it near a magnet.
b) by rubbing it with one end of a
c) by heating it.
d) by placing it in a coil of wire and
pass current through the coil.
Question 9:
The magnetic field of a currentcarrying coil is similar to...
a) the magnetic field of a current-
carrying wire
b) the magnetic field of a ring magnet
c) the magnetic field of a bar magnet
d) the magnetic field of a horseshoe
Question 10:
The experiment that showed that
every electric current produces a
magnetic field was conducted by...
a) Isaac Newton
b) Michael Faraday
c) Hans Christian Ørsted
d) Albert Einstein
Question 11:
What do you need to build an
a) a volt meter
b) a wire
c) a power supply
d) an iron core
Question 12:
In which device is there no
a) electric bell
b) electric motor
c) compass
d) loud speaker
Question 13:
In order to keep an electromotor
rotating after half a turn you need...
a) a turbine.
b) a coil.
c) a commutator.
d) a dynamo.
Question 14:
A generator converts...
a) electric energy into kinetic
b) radiant energy into electric
c) dinetic energy into radiant
d) kinetic energy into electric
Question 15:
Which physical principle does a
generator use?
a) law of conservation
of energy
b) induction
c) magnetism
d) refraction of light
Question 16:
Which of the following is a DC
a) power socket
b) battery
c) solar cell
d) accumulator
Question 17:
What is the frequency of AC current
in the mains in Europe?
a) 100 Hz
b) 100 Volts
c) 50 Hz
d) 230 Volts
Question 18:
A device for converting current and
voltage is called...
a) transformer.
b) generator.
c) uniformator.
d) transistor.
Question 19:
An efficient power plant makes use
a) power-heat-coupling.
b) current-heat-coupling.
c) force-current-coupling.
d) light-current-coupling.
Question 20:
A renewable energy resource is...
a) coal
b) wood
c) oil
d) gas
Question 21:
Which is NOT a greenhouse gas?
a) methane
b) oxygen
c) CFCs
d) carbon dioxide
Question 22:
An advantage of nuclear power
plants is the fact that...
a) they use renewable energy
b) they can be built in a short
period of time.
c) they do not emit CO2.
d) all of the garbage can be
Question 23:
Wood is called CO2-neutral because
a) it is a natural energy resource.
b) it takes up as much CO2 when
growing as it emits when burned.
c) it does not emit CO2 when
d) burning it does not emit
greenhouse gases.

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