Charge, Current and Voltage _ GCSE Physics

The video tutorial explains the fundamental concepts of electricity, focusing on charge, current, and voltage. It describes how charge is created by electrons and protons, how current is the flow of charge measured in amperes, and how voltage represents electrical potential difference. The tutorial uses analogies like rivers and lakes to simplify these concepts and explains the role of batteries in creating potential difference.

What determines whether a substance is positively or negatively charged?

• The temperature of the substance

• The type of material

• The net of electrons or protons

• The number of neutrons

What is the unit of measurement for electric charge?

• Coulomb

• Volt

• Ampere

• Joule

How is electric current best visualized?

• As a battery

• As a static charge

• As a river

• As a waterfall

What device is used to measure electric current?

• Ohmmeter

• Thermometer

• Ammeter

• Voltmeter

What does a 1.5 volt battery indicate about the energy transfer?

• It transfers 1.5 joules of energy per ampere

• It transfers 1.5 joules of energy per electron

• It transfers 1.5 joules of energy per coulomb

• It transfers 1.5 joules of energy per volt