Electrical Energy

Question 1

Electrical energy

Answer 1

The energy provided by the flow of electrons in an electric circuit. Measured in J (joules)

Question 2

Electric cell

Answer 2

A device that converts chemical energy into electrical energy

Question 3

What does an electric cell contain

Answer 3

It contains two metal pieces called electrodes which are surrounded by a solution that conducts electricity called an electrolyte

Question 4

What is the battery

Answer 4

Two or more cells connected together

Question 5

What are the two charges on electrodes

Answer 5

One electrode is negatively charged called an anode and the other is positively charged called a cathode

Question 6

In a battery where do the electrons flow from

Answer 6

They flow from the negative terminal through the circuit to the positive terminal

Question 7

Types of electric cells

Answer 7

Primary cell- And electric cell that can be only used once. The chemical reaction that generates the flow of electrons irreversible

Secondary cell- And electric so that can be recharged for example electrical energy from a wall outlet can be used to reverse the chemical reaction

Question 8

Fuel cell

Answer 8

A type of electric cell where buy chemicals are continuously supplied is the cell operates as the chemicals are used in the fuel-cell they are removed. They can operate for longer periods of time compared to regular electric cells