2) Electricity Flashcards
Describe how to set up a circuit with various components like power sources, switches, resistors, and meters.
To set up a circuit, you would need to
1) draw and interpret a circuit diagram,
2) connect components like power sources, switches, resistors, and meters (ammeters and voltmeters), and
3) arrange them in series or parallel configurations.
Explain the difference between series and parallel arrangements of circuit components.
In a series circuit, the current remains the same throughout.
In a parallel circuit, the current splits at junctions and recombines at the end.
What is the relationship between the current value of the ammter A1, A2 and A3 in this series circuit?
A1 = A2 = A3
The current remains the same.
What is the relationship between the current value of the ammter A1, A2, A3 and A4 in this series circuit?
A1 = A2 + A3= A4
OR
A2 + A3= A4
OR
A1= A4
The total current is the sum of currents in the branches.
How does the effective resistance change in a circuit when more resistors are added in series?
The effective resistance increases in a series circuit as more resistors are connected.
State the advantages of connecting household appliances in parallel.
Connecting household appliances in parallel ensures that each appliance operates independently, preventing one appliance from affecting the others.
State the relationship between power, current, and voltage in an electrical circuit.
The relationship is defined by the formula:
power = current x voltage,
which can be used to calculate power consumption or solve electrical problems.
Describe the importance of using energy-efficient appliances.
Using energy-efficient appliances helps in
1) reducing energy wastage and
2) contributes to a more sustainable environment.
How can knowledge of electricity improve the quality of life?
Understanding electricity helps in
1) powering machines efficiently,
2) contributing to advancements in technology and
3) enhancing our daily lives.
What is this symbol?
battery
What is this symbol?
fixed resistor
What is this symbol?
fuse
What is this symbol?
cell
What is this symbol?
ammeter
What is this symbol?
voltmeter
What is this symbol?
lamp
What is this symbol?
bell
What is this symbol?
variable resistor
This is also known as rheostat.
