Basic principles of Electricity

Question 1

What is a TENS unit?

Answer 1

Transcutaneous Electric Nerve STimulator

Question 2

What is NMES?

Answer 2

Neuromuscular electrical stimulator

Question 3

What is a MES or LIS

Answer 3

Micro electric stimulator or low intensity stimulator

Question 4

What are 3 different kinds of current?

Answer 4

Monophasic, Biphasic or polyphasic

Question 5

Name 2 good conductors

Answer 5

metal and electrolyte solutions

Question 6

Name 2 good insulators

Answer 6

air wood glass

Question 7

A positive pole is also called?

Answer 7

Anode

Question 8

A negative pole is aslo called?

Answer 8

Cathode

Question 9

What is resistance measured in?

Answer 9

Ohm’s

Question 10

What is DC current?

Answer 10

continuous, unidirectional flow of electrons to a positive electric potential (Uses: iontophoresis, stimulating denervated muscles)

Question 11

What is AC current?

Answer 11

continuous, bidirectional flow of electrons from negative and positive electric potentials changing direction with polarity reversal

Question 12

What is duty cycle?

Answer 12

The sum of “on-time” or stimulation pulse delivery and the “off-time” or duration of recovery