electricity

Question 1

What is current (I)

Answer 1

Current is the flow of electric charge around a circuit.

Question 2

What is charge? (Q)

Answer 2

Charge is what makes particles attract or push away from each other in electricity.

Question 3

symbol for current

Answer 3

I

Question 4

symbol for charge

Answer 4

Q

Question 5

what’s potential difference

Answer 5

force that moves electrons along the wire.

Question 6

what’s another word for potential difference

Answer 6

VOLTAGE

Question 7

what’s another word for voltage

Answer 7

Potential difference

Question 8

What’s resistance?

Answer 8

resistance slows the flow of current

Question 9

symbol for resistance

Answer 9

R

Question 10

symbol for potential difference

Answer 10

V

Question 11

WHAT is charge measured in?

Answer 11

coulombs (C).

Question 12

What is current measured in?

Answer 12

Amperes

Question 13

what is resistance measured in?

Answer 13

Ohms

Question 14

symbol for resistance

Answer 14

Ω

Question 15

what’s the unit of current

Answer 15

Amperes (Amps):

Question 16

The unit of charge

Answer 16

Coulomb

Question 17

Diode

Answer 17

A diode is a electronic component that only lets current flow in one direction. It acts like a one-way switch for electricity.

Question 18

Direct Potential Difference

Answer 18

A one-directional current flow.

Question 19

Electrical Current

Answer 19

Electrical current is the flow of electric charge (usually carried by electrons) through a wire or circuit.

It is measured in amperes (A) and flows from the positive end of a power source to the negative end in a circuit.

Question 20

filament lamp

Answer 20

When electricity passes through it, the filament heats up and glows, producing light.

The resistance of the filament increases as it gets hotter.

Question 21

Ohmic Conductor:

Answer 21

An ohmic conductor is a material where the current is directly proportional to the voltage, as long as the temperature stays the same.

This means it follows Ohm’s Law:
V = I × R (Voltage = Current × Resistance)
The graph of current vs voltage is a straight line.

Question 22

The unit of resistance

Answer 22

Ohms

Question 23

parallel circuit

Answer 23

parallel circuit consists of 2 or more loops

This means:

The voltage is the same across all components.

The current is shared between the branches.

If one component breaks, the others keep working.

Question 24

series circuit

Answer 24

series circuit consists of only 1 loop

This means:

The current is the same through all components.

The voltage is shared between them.

If one component breaks, the whole circuit stops working.

Question 25

difference between series and parallel circuits

Question 26

What's electrical current

Answer 26

Electric current is a flow of electrical charge The amount of current shows how fast the charge is flowing.

Question 27

equation for charge (Q)

Answer 27

Q = I * t, Charge(Q)= current(I)* time(t)

Question 28

How does resistance affect current when the potential difference (voltage) stays the same?

Answer 28

If resistance is higher, the current is smaller because it’s harder for the current to flow, even if the voltage is the same.

Question 29

Current, potential difference or resistance can be calculated using what equation

Answer 29

potential difference= current * resistance V = IR

Question 30

what does the ohms law state?

Answer 30

The current through a conductor is directly proportional to the potential difference (voltage) across it, as long as the temperature stays constant.

Question 31

what is a conductor?

Answer 31

A conductor is a material that allows electricity (current) to flow through it easily. 👉 Examples: Copper wires, metal rods

Question 32

filament lamp graph relantionship

Answer 32

Graph: Curved line that gets flatter as voltage increases Relationship: Resistance increases as the filament heats up Current increases more slowly As the lamp gets hotter, the current becomes harder to flow