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Check what I know: Current of Electricity · G3 Physics and O-Level Physics

Check what you know about Current of Electricity, practise what needs work, then check your progress and return for a later review.

SEC G3 Physics 2027

Learning goals

Work through the questions and use the feedback to plan revision.

Check what I know

Check what I know: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 8 minutes

Check what I know

Answer 9 short questions. This starting check helps choose what to work on; it does not prove mastery.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

This check needs JavaScript to record answers. The reviewed questions are listed below for study.

In a metal wire, electrons drift from the negative terminal towards the positive terminal. Which description is correct?

Current is the rate of charge flow, measured in amperes, and conventional current is opposite to the electron drift.
Current is the amount of charge stored, measured in coulombs, and follows the electron drift.
Current is the rate of charge flow, measured in amperes, and follows the electron drift.
Current is energy transferred per charge, measured in volts, and is opposite to electron drift.

A current of 0.30 A flows for 4.0 minutes. What charge passes?

72 C
1.2 C
800 C
18 C

A component has 12 V across it and carries 0.50 A. Which statement is correct?

Resistance is V/I, so the component's resistance is 24 Ω.
Resistance is I/V, so the component's resistance is 0.042 Ω.
Resistance is VI, so the component's resistance is 6.0 Ω.
Resistance is V/I, so the component's resistance is 6.0 Ω.

Wire B has twice the length and half the cross-sectional area of wire A. Both have the same material and temperature. How does B's resistance compare?

B has four times A's resistance.
B has the same resistance as A.
B has twice A's resistance.
B has one quarter of A's resistance.

Define the potential difference across a component.

the resistance multiplied by energy
the work done per unit charge in driving charge through the component
the charge passing per unit time
the force acting per unit current

Define the e.m.f. of a source.

the force per unit current supplied by a source
the charge stored per unit resistance
the work done per unit time in one component
the work done per unit charge by the source in driving charge around a complete circuit

How is total e.m.f. found for sources connected in series aiding?

Add their e.m.f.s.
Subtract every e.m.f. from the largest.
Use only the largest e.m.f.
Average the e.m.f.s.

What happens to the resistance of a metallic conductor as its temperature increases?

It remains constant.
It becomes zero at every high temperature.
It increases.
It decreases.

For graphs of steady current I against p.d. V, compare an ohmic conductor at fixed temperature, a filament lamp allowed to heat, and a diode below reverse breakdown. Which description is correct?

Ohmic: straight through origin; lamp: symmetric curve with decreasing gradient; diode: negligible reverse current and rapid forward rise after threshold.
Ohmic: curved; lamp: straight through origin; diode: symmetric in both directions.
All three have straight lines through the origin.
Ohmic and lamp conduct one way only; diode is symmetric.

Practise

Practise: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 10 minutes

Practise

Questions are selected when you start. Use the feedback to decide what to practise next; this does not prove mastery.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

Practise

Practise after feedback: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 10 minutes

Practise

Questions are selected when you start. Use the feedback to decide what to practise next; this does not prove mastery.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

Check my progress

Check my progress: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 10 minutes

Check my progress

Answer 11 questions. If accepted, this result can contribute to your course progress.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

Check again

Check again: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 10 minutes

Check again

Answer 11 questions. If accepted, this result can contribute to your course progress.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

Review

Review: Current of Electricity · G3 Physics and O-Level Physics

A text-first Current of Electricity assessment with explicit quantities, units, cell directions, temperatures and graph shapes.

About 10 minutes

Review

Answer 11 questions. A scheduled review can contribute to your course progress only when it is due and the result is accepted.

Recent attempts

History is stored only in this browser.

No completed attempts are saved yet.

Course and syllabus information

Course: SEC G3 Physics
Edition: SEC G3 Physics 2027

Check what I know: Current of Electricity · G3 Physics and O-Level Physics

Check what I know: Current of Electricity · G3 Physics and O-Level Physics

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Practise: Current of Electricity · G3 Physics and O-Level Physics

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Practise after feedback: Current of Electricity · G3 Physics and O-Level Physics

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Check my progress: Current of Electricity · G3 Physics and O-Level Physics

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Check again: Current of Electricity · G3 Physics and O-Level Physics

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Review: Current of Electricity · G3 Physics and O-Level Physics

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