Basic Circuit

Question 1

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

Answer 1

POTENTIAL DIFFERENCE OR VOLTAGE

Question 2

voltage is equal to

Answer 2

pressure

Question 3

SI units of Voltage

Answer 3

Joules/Coulomb (J/C)

Question 4

Voltage named after

Answer 4

Alessandro Volta (1745-1827)

Question 5

The rate of flow of electrons in a conductor

Answer 5

ELECTRIC CURRENT

Question 6

SI unit of electric Current and named after who

Answer 6

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

Question 7

1 A = 1 Coulomb/second is equal to

Answer 7

1.6 x 10^19 electrons

Question 8

in basic circuit, large current has

Answer 8

many charge flowing

Question 9

in basic current, small circuit has

Answer 9

few charge flowing

Question 10

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

Answer 10

RESISTANCE

Question 11

Unit of Resistance

Answer 11

Ohms (Ω)

Question 12

• The larger the resistance, the greater the barrier against the flow of current.
• What is the resistance of conducting material found to be?

Answer 12

• 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

Question 13

• 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.

Answer 13

Capacitance

Question 14

Unit of capacitance and named after who

Answer 14

Farad (F) named after Michael Faraday

Question 15

measures how much electric charge is accumulated on the capacitor

Answer 15

Farad

Question 16

1F is equal to

Answer 16

1C / 1V

Question 17

Inhibits flow of electrons

Answer 17

Resistor

Question 18

Provides electric potential

Answer 18

Battery

Question 19

Momentarily stores electric charge

Answer 19

Capacitor

Question 20

Increases or decreases voltage by fixed
amount (AC only)

Answer 20

Transformer

Question 21

Allows electrons to flow in only one
direction

Answer 21

Diode

Question 22

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

Answer 22

Ohm’s law

Question 23

V is?

Answer 23

V = potential

Question 24

A is?

Answer 24

I = current

Question 25

Ω is?

Answer 25

R=resistance

Question 26

* 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

Answer 26

SERIES CIRCUIT

Question 27

rule of series circuit

Answer 27

Potential and Resistance are plus, and Current is equal

Question 28

* 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

Answer 28

PARALLEL CIRCUIT

Question 29

Rules for parallel circuit

Answer 29

Current and Resistor are plus, and Potential is equal

Question 30

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?

Answer 30

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

Question 31

Flow of electrons in one direction along the electric conductor

Answer 31

Direct Current (DC)

Question 32

Oscillation is the

Answer 32

movement back and forth at a regular speed

Question 33

Oscillation of electricity in both direction of the conductor

Answer 33

Alternating Current (AC)

Question 34

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

Answer 34

ELECTRIC POWER

Question 35

Formula for Electric Power

Answer 35

P=IV P=I^2R