ELECTRICAL FUNDAMENTALS

Question 1

difference in potential

Answer 1

voltage or electromotive force

Question 2

refers to the possibility of doing work

Answer 2

potential

Question 3

current unit of measurement is

Answer 3

ampere

Question 4

symbol for current is

Answer 4

I

Question 5

opposition to current flow

Answer 5

resistance

Question 6

unit of measure for resisitance

Answer 6

ohms

Question 7

resistance compares to ____ ____ or the size restriction o inside pipe diameter.

Answer 7

orifice effect

Question 8

ohms law is

Answer 8

E=IxR e=I*R

Question 9

a 5A/50mV shunt has a voltage drop of 12mV what is the amount of current in this circuit

Answer 9

(5A / 50mV) * 12mV = 1.2A

Question 10

a 30A/50mV shunt has a voltage drop of 10mV what is the amount of current in this circuit

Answer 10

(30A/50mV) * 10mV = 6A

Question 11

200 mV =

Answer 11

0.2 V

Question 12

0.03 V =

Answer 12

30 mV

Question 13

0.5 amperes (A) =

Answer 13

500 milliamperes

Question 14

the flow of charges along a conducting path and is measured in amperes (I)

Answer 14

Current

Question 15

the resistance of a conductor of unit length and unit cross-sectional area

Answer 15

resistivity

Question 16

the path followed by an electric current

Answer 16

electric circuit

Question 17

a relationship between the ratio of voltage and current to the resistance of a circuit.

Answer 17

ohms law

Question 18

the rate at which energy is used by an electrical device it is measured in watts

Answer 18

Power P = Ei or P=I^2R

Question 19

the sum of the source voltages around any closed lop is equal to the sum of the voltage drops across the resistance in that loop

Answer 19

kirchhoffs voltage law

Question 20

as much current flows away from a point as flows toward it

Answer 20

kirchhoffs current law

Question 21

current is same everywhere
voltage drops add up to total voltage
sum of individual resistance is equal to total resistance

Answer 21

series circuit

Question 22

voltage drop is same across each branch and is equal to source voltage
total current flowing into and out of the junction point of the branches equals the sum of branch currents
total resistance is equal to the reciprocal of the sum of the reciprocals of the individual resistance
the total resistance is always less than the smallest resistance in the circuit.

Answer 22

parallel circuit

Question 23

the total opposition that a circuit presents to alternating current

Answer 23

impedance

Question 24

the reference electrode is always connected to the negative terminal to obtain the proper polarity reading

Answer 24

ALWAYS