# 1Pilihan
Which energy transfer is correct for a battery-operated radio?
Electrical → chemical + sound → heat
Sound → electrical + chemical + heat
Chemical → electrical → sound + heat
Kinetic → electrical → sound
exam prep 2 (physics)
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exam prep 2 (physics)
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exam prep 2 (physics)
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# 2Pilihan
The cell and the bulbs are identical in all three circuits above. What relationship will the ammeter readings show?
the ammeter reading for circuit 1 will be highest
the ammeter reading for all three circuits will be the same
the ammeter reading for circuit 2 will be half of circuit 1
the ammeter reading for circuit 1 will be the lowest
# 3Pilihan
What is voltage (potential difference) a measure of?
The rate of flow of negative charge
The current flowing around the circuit
The energy provided by the cell
How hard it is to push current through a component
# 4Pilihan
The picture shows a bar magnet and some iron filings. What does the pattern of iron filings show?
the spaces between iron particles
the magnetic field of bar magnet
the arrangement of atoms in iron
the way north poles of a magnet attract
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