Electricity

Question 1

What is the definition of electricity

Answer 1

The flow of electrons through simple materials and devices

Question 2

Electrons leave an atom from what shell

Answer 2

The valance shell,the outer most shell of electrons in an atom

Question 3

How does electricity flow from a battery

Answer 3

Negative to positive

Question 4

What is the definition of current

Answer 4

The flow of electrons through a conductor

Question 5

Measurement of current

Answer 5

Amps (A) or (I)

Question 6

What is the definition of voltage

Answer 6

The potential difference between two points in an electric circuit

Question 7

Resistance

Answer 7

The opposition of current flow (everything is a resistor) (r)

Question 8

Unit of resistance

Answer 8

Ohms

Question 9

Ohms law

Answer 9

The current (amps) in a circuit is directly proportional to the applied voltage and inversely proportional to the circuit resistance (v/ixR)

Question 10

4 requirements for a circuit

Answer 10

1.) power source 2.)conductor 3.)switch 4.) initiator / load

Question 11

Conductor

Answer 11

Any material that allows elections to move free

Question 12

Insulator

Answer 12

Any material that doesn’t allow electrons to move free

Question 13

Result of a short on a battery

Answer 13

1.) premature exhaustion of battery life
2.) Heat
3,) possible buttery explosion

Question 14

What happens to the total amps and volts Chen butteries are placed in series parallel

Answer 14

First add the volts in series and add the total amperage in parallel

Question 15

6 methods of producing voltage

Answer 15

-Friction
-Pressure
-Heat
-Light
-Chemical reaction
-magnetism

Question 16

Relay is an example of what kind of switch

Answer 16

Electro-magnetic switch (collapsing)

Question 17

What causes a collapsing circuit to function

Answer 17

-Battery decay
-cutting the wrong wire
-anti-disturbance

Question 18

What causes movement of the contacts in a relay

Answer 18

Magnetism

Question 19

What do capacitors do

Answer 19

Store energy (can be power source)

Question 20

Work in a circuit is performed by what

Answer 20

-current
-amps
-amperage

Question 21

What moves through a circuit

Answer 21

Electrons

Question 22

What moves through a circuit

Answer 22

Electrons

Question 23

What moves electrons

Answer 23

Voltage

Question 24

What affects resistance

Answer 24

-diameter
-length
-material
-temp

Question 25

Z atomic particles that make up an atom

Answer 25

Proton and neutron

Question 26

What happens to batteries in series

Answer 26

They increase voltage, supplied current (amperage) will remain the same,

Question 27

What happens to batteries in series

Answer 27

They increase voltage, supplied current (amperage) will remain the same,

Question 28

How do you add voltage with batteries in series.

Answer 28

Count the small bars, each is 1.5 volts Example: 4 bars = 6 volts

Question 29

What happens to batteries in parallel

Answer 29

Increase supplied amperage and volts stay the same

Question 30

Adding amperage

Answer 30

Example: 500 mAH per battery you have 3 batteries = 1500 mAH

Question 31

Determine resistance with loads in parallel.

Answer 31

(R1 x R2) (R1 + R2) = ohms

Question 32

Resistance in a circuit with loads in series parallel

Answer 32

Add the amps in series, then add in parallel to get the total amps.

Question 33

How to add resisters

Answer 33

Running in series you add the resistance to get total amps Running in parallel use the equation above to get total amps

Question 34

What type of circuit is a relay considered

Answer 34

Collapsing circuit

Question 35

Cautions to consider when working a relay collapsing circuit

Answer 35

Anti disturbance Battery decay Cutting wrong wire

Question 36

How does a collapsing circuit function

Answer 36

Battery decry

Question 37

What causes movement of the contacts in relay

Answer 37

Energizing or de-energizing of the coil the relay is a electromagnetic switch