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Course: Science — Third Preparatory
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Science — Third Preparatory

Science — Third Preparatory

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Science — Third Preparatory 2026/2027

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Unit 1 - Force, Motion, Acceleration and Physical Quantities

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Quiz

Question bank: Unit 2 — Electricity and Magnetism

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  • Questions count: 6
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1.
If the potential difference across a fixed resistor is doubled, the current becomes:
half
the same
double
four times
2.
Four identical 5 Ω resistors are connected in series. The equivalent resistance is:
1.25 Ω
5 Ω
9 Ω
20 Ω
3.
Three identical 9 Ω resistors are connected in parallel. The equivalent resistance is:
3 Ω
9 Ω
18 Ω
27 Ω
4.
The equivalent resistance of identical resistors connected in parallel is:
larger than one resistor
equal to one resistor
smaller than one resistor
always infinite
5.
Three identical resistors in parallel have an equivalent resistance of 2 Ω. If they are connected in series, the equivalent resistance is:
6 Ω
2 Ω
18 Ω
0.67 Ω
6.
Household appliances are connected in parallel so that:
the current in all is the same
each works independently at the full mains voltage
the resistance is increased
the power is reduced
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