Electricity Flashcards
An electric current is:
A flow of electrons
Which electric currents can be used in electrotherapy?
High frequency currents of low voltage
Which electric currents can be used in electrotherapy?
High frequency and middle frequency currents both of low voltage
Which electric currents can be used in electrotherapy?
Faradic and galvanic currents both of low voltage
Examples of solid conductors are:
Metals
Examples of liquid conductors are:
Fluids in which ions are present
Examples of liquid conductors are:
Body fluids and alkali solutions
Which gas can conduct an electric current?
Neon
Examples of insulators are:
Plastics
An example of an insulator is:
Rubber
The strength of an electric current is measured by its:
Amperage
The pressure of an electric current is measured by its
Voltage
The power of an electrical appliance is measured by its:
Wattage
In an electrical circuit, if the voltage is doubled and the resistance halved, the intensity of the current is:
Increased four times
The unit of current strength is:
Ampere
The unit of current pressure is:
Volt
The unit of electrical resistance is:
Ohm
The unit of electrical power is:
Watt
A current with a constant strength used in beauty therapy is called:
Galvanic
A so-called ‘‘faradic type current’’ is:
An interrupted galvanic current
The current that is used to tone muscles is called:
Faradic
A so-called ‘‘faradic type current’’ is different from a galvanic current in beauty therapy because:
It is more effective for training muscles
A galvanic current is different from a so called ‘‘faradic type current’’ in beauty therapy because:
It is more effective for iontophoresis
Which machine for treatments in beauty therapy supplies galvanic current
A machine for iontophoresis
For which treatments in beauty therapy is galvanic current used?
Iontophoresis
For which treatments in beauty therapy is galvanic current used?
Iontophoresis and electric desincrustation
The meaning of iontophoresis is:
To force cosmetic ingredients deeper into the skin
The meaning of desincrustation is:
To remove substances from the skin’s surface
Desincrustation to remove substances from the surface of the skin is done with a:
Galvanic machine and cathode as the active electrode
The effect of desincrustation on sebum is:
A saponification process caused by galvanic current
A machine for iontophoresis is most likely to contain
A rectifier and a transformer
A machine for desincrustation is most likely to contain:
A rectifier and a transformer
I. Galvanic current can be obtained from a dry cell (Battery)
II. The electric mains supplies galvanic current
I is correct and II is incorrect
The electrical device that changes alternating current into direct current is a:
Rectifier
The function of a rectifier is to change:
An alternating current into a galvanic current
When do the electrodes in electrotherapy have to be moistened or to be applied on a moistened skin?
In iontophoresis and not short wave diathermy
What can occur if a galvanic electrode is not applied to the skin with a regular pressure all over the surface of the electrode
On the spot of the highest pressure skin burning can occur
The electrical device that changes voltage is called a
Transformer
The function of a transformer is to change:
The voltage of an alternating current to a different voltage
A fuse is an electrical device that:
Protects apparatus or circuits from overloading
A fuse is an electrical apparatus:
Is the weakest part of the electrical circuit
The safety practices that should be observed in a beauty salon when using electrical appliances:
Are the responsibility of the employer of the salon
