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Competency Enhancement > Basic Circuit > Flashcards

Basic Circuit Flashcards

1
Q

Is the pressure from an electrical circuit’s power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light

A

POTENTIAL DIFFERENCE OR VOLTAGE

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2
Q

voltage is equal to

A

pressure

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3
Q

SI units of Voltage

A

Joules/Coulomb (J/C)

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4
Q

Voltage named after

A

Alessandro Volta (1745-1827)

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5
Q

The rate of flow of electrons in a conductor

A

ELECTRIC CURRENT

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6
Q

SI unit of electric Current and named after who

A
  • Ampere (A)
  • Named after André-Marie Ampère (1775-1836), a French mathematician and physicist, considered the father of electromagnetism
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7
Q

1 A = 1 Coulomb/second is equal to

A

1.6 x 10^19 electrons

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8
Q

in basic circuit, large current has

A

many charge flowing

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9
Q

in basic current, small circuit has

A

few charge flowing

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10
Q
  • Also known as ohmic resistance or electrical resistance
  • Measure of the opposition to current flow in an electrical circuit
A

RESISTANCE

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11
Q

Unit of Resistance

A

Ohms (Ω)

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12
Q
  • The larger the resistance, the greater the barrier against the flow of current.
  • What is the resistance of conducting material found to be?
A
  • Directly proportional to the length of the material
  • Inversely proportional to the cross-sectional area of the material
  • Depends on the nature of the material
  • It depends on the temperature
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13
Q
  • Ability of a component or circuit to collect and store energy in the form of an electrical charge.
  • BLANK are energy storing devices available in many sizes and shapes.
  • They consist of two plates of conducting material (usually a thin metal) sandwiched between an insulator made of ceramic, film, glass, or other materials, even air.
A

Capacitance

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14
Q

Unit of capacitance and named after who

A

Farad (F) named after Michael Faraday

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15
Q

measures how much electric charge is accumulated on the capacitor

A

Farad

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16
Q

1F is equal to

A

1C / 1V

17
Q

Inhibits flow of electrons

A

Resistor

18
Q

Provides electric potential

A

Battery

19
Q

Momentarily stores electric charge

A

Capacitor

20
Q

Increases or decreases voltage by fixed
amount (AC only)

A

Transformer

21
Q

Allows electrons to flow in only one
direction

A

Diode

22
Q

states that the VOLTAGE across the total circuit or any portion of the circuit is equal to the CURRENT times the RESISTANCE or V=IR

A

Ohm’s law

23
Q

V is?

A

V = potential

24
Q

A is?

A

I = current

25
Q

Ω is?

A

R=resistance

26
Q
  • Provides exactly one path
    between any two points
    for electric current.
  • Have the advantage of
    making each component
    very dependent on the other
    components.
  • If one component is
    removed, all of the
    components turn off
A

SERIES CIRCUIT

27
Q

rule of series circuit

A

Potential and Resistance are plus, and Current is equal

28
Q
  • Electrical circuits with
    multiple resistors, connected
    along many branches (or
    paths) of electricity
  • Contains element that
    bridge the circuit rather than
    lie in a line along the
    conductor
A

PARALLEL CIRCUIT

29
Q

Rules for parallel circuit

A

Current and Resistor are plus, and Potential is equal

30
Q

a series circuit contains 3 resistive elements
having values of 8Ω, 12 and, 15Ω. If the circuit potential is 110V, what is the total circuit resistance and current, the current in each resistor, and the voltage across each resistor?

A

RT = R1 + R2 +R3
RT = 8Ω + 12Ω + 15Ω
RT =35Ω

I = V / R
IT = 110V / 35Ω
IT =3.14A

V1 = (3.14A) (8 Ω) =25.12V
V2 = (3.14A) (12 Ω) =37.68V
V3 = (3.14A) (15 Ω) =47.10V

31
Q

Flow of electrons in one
direction along the electric
conductor

A

Direct Current (DC)

32
Q

Oscillation is the

A

movement back and forth at a regular speed

33
Q

Oscillation of electricity in
both direction of the conductor

A

Alternating Current (AC)

34
Q

*Time rate of which the work is done
*Measured in watts (W)
*1W=1Ampere of current flowing through an electric potential
of 1V

A

ELECTRIC POWER

35
Q

Formula for Electric Power

A

P=IV
P=I^2R

Competency Enhancement (7 decks)

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