Unit 6: Current Electricity

Question 1

What is current Electricity?

Answer 1

current electricity is the steady flow of electric charge through conductors

Question 2

What is an Electric Circuit?

Answer 2

An electric circuit is a closed path through which electricity flows.

Question 3

What’s electrical energy

Answer 3

Electrical energy is the energy created by the movement of electric charges (electrons) through a conductor, like a wire. It powers things like lights, phones, and appliances.

Question 4

What is the difference between AC and DC currents

Answer 4

The main difference between AC (Alternating Current) and DC (Direct Current) is the direction in which the electric charge flows

In short, AC switches direction regularly, while DC flows steadily in one direction.

Question 5

What is AC currents

Answer 5

AC (Alternating Current): The electric charge changes direction periodically. In most homes and businesses, electricity is delivered as AC, which means the flow of current alternates back and forth.

Question 6

What is DC currents

Answer 6

DC (Direct Current): The electric charge flows in only one direction. Batteries and some electronic devices use DC power.

Question 7

What are the 3 basic parts of a simple current

Answer 7

Power Source (e.g., battery or power supply) – Provides the electrical energy.

Conductor (e.g., wire) – Allows the electric current to flow.

Load (e.g., light bulb or motor) – Uses the electrical energy to perform work, like lighting up or turning.

Question 8

What are the the 3 parts of a current important for

Answer 8

The three parts are connected to form a complete circuit, enabling electricity to flow and power devices

Question 9

What is the difference of a series and Parallel circuit

Answer 9

Series: Components share a single path for current.

Parallel: Components have multiple paths for current.

Question 10

What is a series circuit

Answer 10

Series Circuit: In a series circuit, all components are connected end-to-end in a single path. The current flows through each component one after the other. If one component fails (e.g., a bulb burns out), the entire circuit is broken, and all devices stop working.

Question 11

What is a parallel circuit

Answer 11

Parallel Circuit: In a parallel circuit, the components are connected across common points, creating multiple paths for the current to flow. If one component fails, the others continue to work because the current can flow through the remaining paths.

Question 12

What is an electric cell

Answer 12

An electric cell is a device that stores and provides electrical energy. It has two terminals: a positive (+) and a negative (-) end. It provides electrical energy (e.g., a single AA or 9V cell).

When connected to a circuit, the cell releases energy in the form of electrical current, which powers devices like flashlights or clocks. It works by a chemical reaction that produces electricity.

Question 13

What is a battery

Answer 13

A battery is a collection of two or more electric cells connected together to provide more power or a longer-lasting charge. It stores electrical energy and releases it when needed to power devices like phones, flashlights, or toys. Each cell in a battery has a positive and a negative terminal, and the chemical reaction inside produces electricity.

Question 14

What is the difference between an electric cell and a battery

Answer 14

An electric cell is a single power source, while a battery is made up of multiple cells working together.

Question 15

What is a primary cell

Answer 15

A primary cell is a type of battery that cannot be recharged once it runs out of power. Once the energy inside is used up, you have to replace it. Examples include regular AA or AAA batteries.

Question 16

What is a secondary cell

Answer 16

A secondary cell, on the other hand, is a rechargeable battery. You can use it multiple times by recharging it when it runs low. Examples include the batteries in smartphones or electric cars.

Question 17

What is the difference between a primary cell and a secondary cell

Answer 17

primary cells are for one-time use, while secondary cells can be recharged and used many times.

Question 18

What’s the point of a circuit breaker

Answer 18

A circuit breaker is a safety device that stops the flow of electricity if there is too much current. This helps prevent damage to the wires or appliances and reduces the risk of fires. Once the problem is fixed, the circuit breaker can be turned back on.

Question 19

Why are short curcuits dangerous

Answer 19

A short circuit is dangerous because it allows electricity to flow through an unintended path with very little resistance. This causes a large amount of current to flow quickly, which can overheat wires, damage electrical components, and potentially start a fire. The sudden surge of electricity can also damage devices or cause electric shocks.

Question 20

What is the term used to describe the right slot of a wall outlet

Answer 20

The term used to describe the right slot of a standard wall outlet is the “live” or “hot” slot. This is where the electrical current flows into the device plugged in.

Question 21

What is the term used to describe the left slot of a wall outlet

Answer 21

The term used to describe the left slot of a standard wall outlet is the “neutral” slot. This is where the electrical current returns after flowing through the device.

Question 22

What is the middle, round opening of a wall outlet

Answer 22

The rounded opening of a wall outlet is called the “ground” slot. It provides a safe path for electricity to flow into the ground in case of a fault or short circuit, helping to prevent electric shocks or damage.

Question 23

What direction does the electricity flow from the outlet

Answer 23

Electricity flows out of the “hot” (or live) slot of the outlet, into the connected device, and then returns through the “neutral” slot back to the power source.

The flow follows this path: from the outlet to the device, and then back to complete the circuit.

Question 24

What is the purpose of the ground slot of a wall outlet

Answer 24

The ground slot in an outlet is used for safety. It provides a path for electrical current to flow into the ground if there is a fault, like a short circuit or exposed wire.

This helps prevent electric shocks or fire hazards by directing excess electricity safely away from the device and the user.

Question 25

What does GFCI stand for

Answer 25

GFCI stands for Ground Fault Circuit Interrupter.

Question 26

Where in a home are you most likely to find a GFCI outlet

Answer 26

areas where water is present, such as bathrooms, kitchens, and outdoor outlets.

Question 27

What is the purpose of a GFCI outlet

Answer 27

It is a safety device that detects imbalances in the electrical current and quickly shuts off power to prevent electric shock

Question 28

If 3 light bulbs are connected in series to a battery what happens if the third light bulb blows out

Answer 28

If the third light bulb blows out in a series circuit, the entire circuit will be broken, and all the light bulbs will stop working.

This happens because in a series circuit, the current has only one path to follow. When one component (in this case, the third bulb) is removed or fails, the current can no longer flow through the circuit.

Question 29

If 3 light bulbs are connected in parallel to a battery what happens if the second light bulb from the source blows out

Answer 29

If the light bulb closest to the source in a parallel circuit blows out, the other bulbs will still continue to work. This is because each bulb in a parallel circuit operates independently, with its own separate path for current. The failure of one bulb, even if it’s the one closest to the battery or power source, does not affect the flow of electricity to the other bulbs.

Question 30

What is a current

Answer 30

Current is the flow of electric charge through a conductor, like a wire. It is caused by the movement of electrons and is measured in amperes (A). In simple terms, it’s the “flow” of electricity that powers devices like lights, phones, and computers. Current can flow in one direction (direct current or DC) or alternate back and forth (alternating current or AC).

Question 31

What is a voltage

Answer 31

voltage is what drives electric current to flow in a circuit, similar to how water pressure pushes water through pipes. Voltage is measured in volts (V) and is often compared to the “pressure” that moves electrical charges in a circuit.

Question 32

What is the calculation to fund the voltage?

Answer 32

Mathematically, voltage between two points is defined as:

V=E/Q
​

Question 33

What does the letter v stand for

Answer 33

𝑉= is the voltage

Question 34

What does E stand for

Answer 34

E= Energy (Joule/J)

Question 35

What does q stand for

Answer 35

Q is the charge (in coulombs)

Question 36

Why do birds purchase on electrical wire not get Electrocuted

Answer 36

Birds don’t get electrocuted on power lines because they’re only touching one wire.

Since both of their feet are at the same voltage, no electricity flows through their bodies.

Question 37

What is a scenario where the birds on a wire can get electricated

Answer 37

Since both of their feet are at the same voltage, no electricity flows through their bodies.

For electricity to flow, there needs to be a difference in voltage, like if they touched a second wire or something grounded.

Question 38

If you are given 1080 J of energy and 240C of charge what is the Voltage?

Answer 38

To calculate the voltage, you can use the formula:

Given:
𝐸=1080J,
𝑄=240C
V=? v
 
E/Q = V

1080 J ÷ 240C = 4.5V

So, the voltage is 4.5 volts.

Question 39

If you are given 520C of charge and 21 minutes what is the current

Answer 39

To calculate the current, you can use the formula:

𝐼=𝑄/t

Given:

𝑄=520V
t=21
I=? A

21 Minutes=21×60=1260 seconds

Now, substitute the values into the formula:

𝐼=520C /1260s
 
=0.4127A

So, the current is approximately 0.413 A

Rounded down: 0.41 A

Question 40

Calculation for Current

Answer 40

Q = t/I

Question 41

What does t stand for

Answer 41

t = Time

(Always a lowercase t)

Question 42

What does I stand for

Answer 42

I is the current (in Ampmeres/Amps/A),