Deck 14: Electricity Fundamentals

Question 1

The relationship that exists between voltage, current, and resistance is called __________ law.

A) Charles'
B) Ohm's
C) Boyle's
D) Dalton's

Answer 1

B

Question 2

The current in a circuit will increase as the resistance is decreased.

Answer 2

True

Question 3

A circuit that has infinite resistance is said to be a/an __________ circuit.

A) open
B) short
C) closed
D) shunt

Answer 3

A

Question 4

The total resistance of a parallel circuit is always more than the value of the lowest resistance in the circuit.

Question 5

Which is the best description of a watt?

A) The amount of power consumed when a one-volt dc power source causes a current of one amp to flow in a circuit.
B) The amount of power consumed when a one-volt ac power source causes a current of one amp to flow in a circuit.
C) The amount of voltage consumed when a one-volt dc source causes a resistance of one ohm in a circuit.
D) The amount of current consumed when a one-volt ac source causes a current of one amp to flow in a circuit.

Question 6

The current in a circuit will increase as the resistance is increased.

Question 7

Which material would NOT be considered a good conductor?

A) copper
B) aluminum
C) glass
D) silver

Question 8

The current in a circuit will decrease as the voltage is increased.

Question 9

Current in an electrical circuit is measured in __________.

A) volts
B) ohms
C) amps
D) microfarads

Question 10

Loads that are characterized by the generation of a magnetic field are called ___________ loads.

A) inductive
B) resistive
C) capacitive
D) infinitive

Question 11

The current is the same at all points in a series circuit.

Question 12

Which material would NOT be considered a good insulator?

A) wood
B) rubber
C) plastic
D) gold

Question 13

When there is a path for electric current to take between two points being tested, it is called __________.

A) current
B) voltage
C) continuity
D) wattage

Question 14

Loads that primarily generate light or heat or a combination of both are called __________ loads.

A) inductive
B) resistive
C) capacitive
D) infinitive

Question 15

Single-phase power supplies always have a neutral wire.

Question 16

Which three components are necessary in order to have an electrical circuit?

A) power source, path, load
B) path, load, switch
C) switch, power source, load
D) power source, switch, path

Question 17

Resistance in an electrical circuit is measured in __________.

A) volts
B) ohms
C) amps
D) microfarads

Question 18

The current in a circuit will decrease as the voltage is increased.

Question 19

Three-phase power supplies always have a neutral wire.

Question 20

The center of an atom is called a __________.

A) proton
B) neutron
C) nucleus
D) electron

Question 22

What does emf stand for when referring to electricity?

Question 23

If a parallel circuit is made up of four paths, each of which has a resistance of 20 ohms, the total resistance will be equal to __________ ohms.

A) 80
B) 40
C) 10
D) 5

Question 26

If a series circuit had two loads, with the resistance of one load being 10 ohms and the resistance of the other load being 15 ohms, what would be the total resistance of the circuit?

A) 5 ohms
B) 10 ohms
C) 15 ohms
D) 25 ohms

Question 27

State the Law of Charges.