Electricity

Question 1

What is important about the valence shell?

Answer 1

The less electrons in the valence shell the more likely that the electron can be moved

Question 2

what is electrostatic?

Answer 2

1) opposites attract
2) likes repel

Question 3

What is electron current?

Answer 3

The flow of electrons from negative to positive. As one electron is added, it replaces and pushes out the next electron, and that one does the same and so on. The effect is instantaneous no matter the length of the conductor.

Question 4

What is current?

Answer 4

the flow of electrons through a conductor. It’s unit of measure is amperes or amp expressed as I. Is the pushing force / moves the electrons through the circuit

Question 5

what is voltage

Answer 5

The potential difference between positive and negative. It’s unit of measure is volt expressed as V.

Question 6

What is resistance?

Answer 6

the opposition to current flow. It’s unit of measure is the ohm expressed as R

Question 7

What is Ohm’s law?

Answer 7

The current in a circuit is directly proportional to the applied voltage and inversely proportional to the circuit resistance

Question 8

What are the 4 requirements of a circuit?

Answer 8

1) Switch
2) power source
3) conductor (wires)
4) load (explosive)

Question 9

what is a conductor?

Answer 9

Any material that will allow electrons to move within it freely

Question 10

What is an insulator?

Answer 10

A material that does not allow the electrons to move within it freely

Question 11

What does a capacitor do?

Answer 11

Store electrons (energy/power)

Question 12

What will happen to batteries in series?

Answer 12

increase voltage but the amperage will remain the same

Question 13

What will happen to batteries in parallel?

Answer 13

increase amperage but voltage will remain the same

Question 14

What factors effect resistance?

Answer 14

The conductors length, diameter, material, and temperature

Question 15

What are the 4 requirements for arming and fuzzing circuits?

Answer 15

SPICE
1) S- switch
2) P- power source
3) I- initiator
4) C- conductor
E-explosive

Question 16

What are the laws of series circuits?

Answer 16

The sum of the individual voltage drops around a series circuit equals the applied voltage, current has the same value at any point within a series circuit, the sum of the individual resistances within a series circuit equals the total resistance of that circuit, to add the total resistance R1=R1+R2

Question 17

Wha are the laws of parallel circuits?

Answer 17

The voltage is the same across each branch of the circuit, total current is equal to the sum of the individual branch currents, total resistance is always less or approximately equal to the value of the smallest resistive branch. Rt=R1+R2+R3

Question 18

Explain switch contacts

Answer 18

When at rest with no outside influence:

Common - regardless of the switch, will always be used
Normally open (NO)
Normally closed (NC)

Question 19

What are relays?

Answer 19

Electromagnetic switch

Question 20

What are some of the dangers of relays?

Answer 20

Battery decay
Cutting the wrong wire
Anti-disturbance (caused by a weak battery)

Question 21

What causes a collapsing circuit to function?

Answer 21

Battery decay
Cutting the wrong wire
Anti-disturbance

Question 22

What causes movement of the contacts in a relay?

Answer 22

The energizing / de-energizing of the coil. The relay is an electromagnetic switch

Question 23

Explain the voltage in a series circuit?

Answer 23

It will change across each load in accordance with the amount of resistance

Question 24

Explain the voltage in a parallel circuit?

Answer 24

The voltage stays the same across all paths in parallel

Question 25

The work in a circuit is performed by the ?

Answer 25

Current / amperage (pushing force)

Question 26

What is the definition of electricity?

Answer 26

The flow of electrons through simple materials and devices