A rectifier:

• Stores electric charges

• Changes the mains alternating current into direct current

• Changes the voltage of an alternating current without changing its frequency

• Converts electrical energy into mechanical energy

In a plug the brown wire is the:

• Earth

• Live

• Neutral

• Not used

A neutron has:

• A negative electrical charge

• An interchangeable charge

• No electrical charge

• A positive electrical charge

Which type of fuse is required for an appliance using 500watts?

• 3 amp

• 10 amp

• 5 amp

• 13 amp

The charge on a proton is:

• Negative

• Positive

• Both negative and positive

• No electrical charge

In a plug, the blue wire is:

• Earth

• Neutral

• Not used

• Live

The charge on an electron is:

• Negative

• Positive

• Both negative and positive

• No electrical charge

An ohm:

• Is a unit of electrical resistance

• Is a safety device which blows when an excessive current flows in a circuit

• Is used to complete of break a circuit

• Is a substance which resists the passage of an electrical current

Which massage movement should be avoided when using indirect high frequency?

• Effleurage

• Tapotement

• Petrissage

• Vibrations

What is the current used in high frequency treatment?

• Direct current

• Rapidly alternating current

• Indirect current

• Direct modified current