Parts of a Circuit
What is the name of a path through which electric current flows?
Circuit
What unit is used to measure electrical power?
Watt
In a series circuit, what happens if one bulb burns out?
The entire circuit stops working.
In a parallel circuit, what happens if one bulb burns out?
The other bulbs stay lit.
What is the main safety device used in UAE homes to prevent electrical fires?
Circuit breaker
What is the role of a load in an electric circuit?
The load is the part of the circuit that receives electrical energy and can be turned on.
Which part of a circuit changes electrical energy into another form of energy?
The load
What remains constant in a series circuit: voltage or current?
Current
What remains constant in a parallel circuit: voltage or current?
Voltage
Why do electricians use rubber gloves while working?
Rubber is an insulator, preventing electric shock.
Which electrical component stores energy in an electric field?
Capacitor
If a 100W bulb runs for 5 hours, how much energy does it consume?
0.5kWh
Do you think Christmas Lights are an example of a series circuit or a parallel circuit? why do you think that?
They are an example of a series circuit because if one of the bulbs burns out the entire strand will not light up.
If two 5Ω resistors are connected in parallel, what is the total resistance?
2.5 Ohm
If a light bulb is rated 60W at 220V, how much current does it draw?
0.27A
What is the function of a resistor in a circuit?
Limits the flow of current
Why do UAE homes use 220V instead of 110V?
Higher voltage reduces energy loss and allows for smaller wires.
If you add more resistors to a series circuit, what happens to the total resistance?
It increases.
In a home, why are appliances connected in parallel instead of series?
So each device gets the same voltage and can work independently.
What is the primary cause of short circuits in UAE desert camps?
Sand and dust affecting wiring
What happens if a circuit has no resistance and a high-voltage source?
A short circuit occurs, leading to overheating or fire.
What is the main advantage of LED bulbs over incandescent bulbs?
LEDs use less energy and last longer.
A 9V battery powers a series circuit with three identical bulbs. If the total current is 3A, what is the resistance of each bulb?
1 Ohm
What happens to the total current in a parallel circuit when another branch is added?
It increases
What are three ways to reduce electricity consumption in UAE homes?
Using LED lights, turning off appliances, using smart energy-saving systems.