Deck 2: Electrical Quantities and Ohms Law

Question 1

What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them?

A) Ampere's Law
B) Coulomb's Law
C) Ohm's Law
D) Volt's Law

Answer 1

B

Question 2

One coulomb per second is equal to one .

A) ampere
B) ohm
C) volt
D) watt

Answer 2

A

Question 3

Voltage flows through an electric circuit like water flows through a pipe.

Answer 3

False

Question 4

An electrical circuit has a voltage of 50 V and a resistance of 5 Ω. What is the value of current?

A) 10 A
B) 45 A
C) 55 A
D) 250 A

Question 5

Approximately how many horsepower is an electrical device listed as 3,000 watts?

A) 1/4
B) 1/6
C) 4
D) 6

Question 6

The amount of electrical power being used in a circuit is measured in .

A) amperes
B) volts
C) ohms
D) watts

Question 7

The amount of potential necessary to cause one coulomb to produce one joule of work is a(n) .

A) ampere
B) ohm
C) volt
D) watt

Question 8

The statement, "In a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance," is know as law.

A) Ampere's
B) Coulomb's
C) Ohm's
D) Volt's

Question 9

An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor?

A) 60
B) 118
C) 122
D) 240

Question 10

A grounding conductor helps prevent a shock hazard in the event that an ungrounded, or hot, conductor comes in contact with the case or frame of an appliance.

Question 11

The neutral conductor is also referred to as the conductor.

A) hot
B) grounded
C) short
D) safety

Question 12

What is another term for electromotive force (EMF)?

A) Amperage
B) Ohmage
C) Voltage
D) Wattage

Question 13

During normal operation of a typical 120-volt appliance circuit, current flows through the hot, grounding, and neutral conductors.

Question 14

If a circuit is open, current flow.

A) will
B) will not

Question 15

What type of circuit generally occurs when the conductors leading from and back to the power source become connected?

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

Question 16

The unit of resistance to current flow is the .

A) ampere
B) ohm
C) volt
D) watt

Question 17

The grounding prong of a plug should never be cut off or bypassed.

Question 18

The velocity of AC through a conductor is the speed of light.

A) equal to
B) greater than
C) less than

Question 19

What causes a wire to become warm when current flows through it?

A) amperage
B) resistance
C) voltage
D) divergence

Question 20

A complete circuit is often referred to as a(n) circuit.

A) closed
B) open
C) shorted
D) grounded

Question 21

Conventional current flow theory states that current flows from the most positive point to the most
_______________.

Question 22

A toaster is listed as 1560 W. When it is plugged into a 120 V circuit and starts to make toast, how many amperes will it draw?

A) 13
B) 1440
C) 1680
D) 187,200

Question 23

An electric circuit has a resistance of 20 Ω. The current is measured to be 6 A. How many volts are applied to the circuit?

A) 3 1/3
B) 14
C) 26
D) 120

Question 24

The theory concerning current flow that is most widely accepted as being correct is the flow theory.

Question 25

What standard prefix in engineering notation indicates multiplication by 1,000,000,000?

A) kilo (K)
B) tera (T)
C) giga (G)
D) mega (M)