Electricity Flashcards
Name the atomic particle that carries the electricity around the electrical circuit.
Electrons carry electrcity around the electrcial circuit.
Name the two types of electrical circuits.
Series circuit and Parallel circuit
Which circuit is better? and why?
Parallel circuits are better because even if one component breaks down, the other part of the circuit will work.
Current is measured in ….
Ampere - Amps
Current can be measured using a …
Ammeter
Voltage is same as …
Potential difference
What drives the electricity around the circuit?
Potential difference (Voltage)
Voltage can be measured using a …
Voltmeter
Potential difference is measured in …
volts
What is a conductor?
A conductor allows the electricity to pass through.
What is an insulator?
An insulator will not allow the electricity to pass through.
What is resistance?
Resistance is a measure of the opposition to current flow in an electrical circuit.
Resistance is measured in …
ohms
In an electrical circuit, does the electricity gets used up?
No, elecricity is never used up, the same amount of electricity will return to the cell.
How does the energy transfer occur in electrical circuits?
From the batteries’ chemical energy store, the electrons carry electrical energy to the bulb and the energy is transferred to light and thermal energy.
What drives the electrons around the circuit?
Potential difference
What is electricity?
Electric current is the flow of charge around a circuit
What direction does the current flow?
Current flows from positive to negative
What directions does the electrons flow?
Electrons flow from negative to positive
What will happen when you increase the potential difference?
More current will flow
Resistance is equal to
Potential difference ÷ Current
What is a component?
A component is anything you put in a circuit
When the resistance is higher, the current will be
current will be lower
Give an example of an insulator
wood, plastic
Give an example of a conductor
metal, copper
In a series circuit, how many paths are there?
only one path
In a series circuit, what is the relationship of the potential difference of components to battery?
V = V1+V2+V3
In a parallel circuit, how many paths are there?
Always more than one
In a parallel circuit, calculate the current
A = A1 + A2 + A3
In a parallel circuit, calculate the voltage
V = V1 =V2 = V3
What is a battery rating?
Potential difference
What is a bulb rating?
Potential difference
Calculate the resistance if
PD = 1.5V Current = 0.1A
Resistance
1.5/0.1 = 15 ohms
