Draw a symbol for the voltmeter.

Important Questions on Electrical Quantities

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.11

What is the name given to the $p.d$ across a cell or a battery?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.11

What unit is emf measured in?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.12

What is the resistance of a lamp if a current of $2.0 \mathrm{A}$ flows through it when it is connected to a $12 \mathrm{V}$ supply?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.12

If the potential difference across the lamp is increased, will the current flowing increase or decrease?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.14

What $p.d$ is needed to make a current of $1.0 \mathrm{A}$ flow through a $20 \mathrm{\Omega }$ resistor?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.15

What is the resistance of a resistor if a $p.d$ of $20 \mathrm{V}$ across it causes a current of $2.0 \mathrm{A}$ flows through it?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.15

What $p.d$ would cause a current of $3.0 \mathrm{A}$ to flow through a $10 \mathrm{\Omega }$ resistor?

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 18 - Electrical Quantities>Questions>Q 18.16

What current flows when a $p.d$ of $14.5 \mathrm{V}$ is connected across a $1000 \mathrm{\Omega }$ resistor?