WorksheetsTLE 8 Term 2 Reviewer
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
What is electricity?
a)
The flow of heat
b)
The flow of electrons
c)
The push of water through pipes
d)
A type of sound energy
2.
What unit is used to measure electric current?
a)
Volt
b)
Ohm
c)
Ampere
d)
Watt
3.
Voltage is best described as:
a)
The flow of electric charge
b)
The opposition to current
c)
The pressure that pushes electrons
d)
The heat produced by appliances
4.
Resistance refers to:
a)
How fast electrons move
b)
The opposition to current flow
c)
The amount of voltage supplied
d)
The brightness of a bulb
5.
Which material has low resistance?
a)
Rubber
b)
Plastic
c)
Glass
d)
Copper
6.
Ohm’s Law states that:
a)
Voltage equals resistance multiplied by power
b)
Current equals voltage multiplied by time
c)
Voltage equals current multiplied by resistance
d)
Electricity equals power over current
7.
If voltage increases and resistance stays the same, current will:
a)
Decrease
b)
Increase
c)
Stay the same
d)
Stop completely
8.
If resistance doubles but voltage stays constant, current will:
a)
Double
b)
Triple
c)
Be cut in half
d)
Stay the same
9.
Which formula is correct?
a)
R = V × I
b)
P = I ÷ V
c)
I = V ÷ R
d)
V = P ÷ R
10.
A circuit has 10 A of current and 4 Ω resistance. What is the voltage?
a)
14 V
b)
40 V
c)
2.5 V
d)
6 V
11.
A 3 V battery powers a bulb with 6 Ω resistance. What is the current?
a)
0.25 A
b)
0.5 A
c)
1 A
d)
2 A
12.
A TV uses 120 V and draws 2 A. What is its resistance?
a)
60 Ω
b)
240 Ω
c)
0.06 Ω
d)
122 Ω
13.
Power is measured in:
a)
Volts
b)
Amperes
c)
Watts
d)
Ohms
14.
The formula for electric power is:
a)
P = V + I
b)
P = V × I
c)
P = V ÷ I
d)
P = I ÷ R
15.
A charger is labeled 19 V and 3 A. What is its power?
a)
22 W
b)
38 W
c)
57 W
d)
76 W
16.
If a 60 W bulb runs for 1 second, how much energy does it use?
a)
1 joule
b)
60 joules
c)
120 joules
d)
600 joules
17.
A 600 W rice cooker runs for 30 minutes. How much energy does it use?
a)
3,000 J
b)
36,000 J
c)
1,080,000 J
d)
600 J
18.
What is a circuit?
a)
A broken path
b)
A connection of pipes
c)
A closed loop where current flows
d)
A type of battery
19.
Which is NOT a basic part of a circuit?
a)
Energy source
b)
Conductor
c)
Load
d)
Refrigerator
20.
In a closed circuit:
a)
Current cannot flow
b)
Current flows normally
c)
The path is broken
d)
All components turn off
21.
In an open circuit, the current:
a)
Flows faster
b)
Flows slower
c)
Does not flow at all
d)
Reverses direction
22.
In a series circuit:
a)
Many branches
b)
Current is shared
c)
Voltage same in all
d)
Current same in all
23.
When one bulb in series circuit burns out:
a)
All stay on
b)
Only one off
c)
All turn off
d)
Voltage increases
24.
In a parallel circuit:
a)
Current same in all
b)
Voltage same in all
c)
One path only
d)
One broken bulb turns all off
25.
Why are household wirings parallel?
a)
Easier to break
b)
Cheaper
c)
Appliances stay on
d)
Allows one at a time
26.
The meter number refers to:
a)
# of appliances
b)
Meter ID
c)
Energy consumed
d)
Electricity rate
27.
Actual consumption is computed by:
a)
Adding readings
b)
Subtracting readings
c)
Dividing watts by hours
d)
Multiplying volts and amps
28.
Electricity is measured in:
a)
Liters
b)
Kilowatt-hours
c)
Joules
d)
Calories
29.
Which is NOT part of Meralco bill:
a)
Generation
b)
Distribution
c)
Transmission
d)
Oil charge
30.
1 kilowatt equals:
a)
1 W
b)
10 W
c)
100 W
d)
1000 W
31.
Formula for computing kWh when wattage is known:
a)
(W×h)/1000
b)
(W+h)/100
c)
W×h×1000
d)
(W÷h)×100
32.
If an appliance lists volts and amps, watts can be found by:
a)
Add
b)
Divide volts by amps
c)
Multiply volts & amps
d)
Subtract
33.
600 W rice cooker for 2h consumes:
a)
1.2 kWh
b)
3 kWh
c)
0.3 kWh
d)
12 kWh
34.
A device runs at 220 V and 4.5 A. Its wattage is:
a)
49.5 W
b)
220 W
c)
990 W
d)
4.5 W
35.
Using the wattage 990 W, if used for for 8 hours/day, kWh =
a)
7.92 kWh
b)
99 kWh
c)
1.98 kWh
d)
0.89 kWh
36.
Which action reduces electric consumption?
a)
Multiple appliance use
b)
Lights on daytime
c)
Unplug chargers
d)
Lowest aircon temp
37.
Why does a Parallel circuit prevents blackout when one bulb blows?
a)
Increases resistance
b)
Each branch has own path
c)
Voltage zero
d)
Current constant
38.
Which has the greatest impact on your electric bill?
a)
Generation charge
b)
Transmission
c)
Wiring type
d)
Color
39.
High heat index increases electricity bills because:
a)
Appliances break
b)
Bills stop
c)
More appliances used
d)
Current stronger
40.
Which best describe the Relationship among V, I, and R?
a)
All increase together
b)
Voltage varies only
c)
V and I depend on R
d)
Current increases with R
100 %
