Effects of an Electric Current and Domestic Circuits

Question 1

Joule’s Law

Answer 1

States that the rate at which heat is produced in a conductor is directly proportional to the square of the current provided its resistance is constant

Question 2

Ion

Answer 2

An atom or a molecule that has lost or gained one or more electrons is called an ion

Question 3

Charged Carriers in an Electrolyte

Answer 3

In an electrolyte the charge carriers are positive and negative ions

Question 4

Kilowatt-Hour

Answer 4

The kilowatt-hour (kWh) is the amount of energy used by a 1000 W appliance in one hour