Extra TopicsMedium Exam FrequencyAQA

I-V Characteristics

Revise I-V Characteristics in Extra Topics for GCSE Physics with 13 exam-style questions and 11 flashcards. This topic appears regularly enough that it should be part of a solid GCSE revision cycle.

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Mapping How Components Behave with Electricity

Introduction 2

The Required Practical — Circuit Setup

Deep Dive 3

The Three Key I-V Characteristic Shapes

Deep Dive 4

Why Resistance Changes — The Physics Explanation

How It Works 5

Summary Comparison Table

Comparison 6

Key Terms

Definitions 7

Key Facts

Key Facts 8

Common Misconceptions

Misconceptions 9

Memory Aids

Memory Aid 10

Exam Focus — I-V Characteristics

Exam Focus 11

Exam Tips for I-V Characteristics

Exam Tips 12

Knowledge Organiser: I-V Characteristics

Summary

Sample Flashcards

What is a diode used for?

Converting AC to DC (rectification), because it only conducts in one direction

What is an ohmic conductor?

A component where current is directly proportional to voltage at constant temperature. The I-V graph is a straight line through the origin

Exam questions for I-V Characteristics

What does an I-V characteristic graph show for a component?

A. How resistance varies with temperature
B. How current varies with voltage
C. How power varies with time
D. How voltage varies with time

1 markfoundation

Explain why the I-V graph for a filament lamp is not a straight line.

2 marksstandard

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