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WorksheetsELECTRICITY F2
Total questions: 25
Worksheet time: 16mins
What is the S.I unit for energy.
Ampere, A
Joule, J
Watt, W
Kelvin, K
Which of the statement is not correct about a resistor?
There are two types of resistors.
Fixed resistors are also called as rheostats or potentiometer.
A resistor where the resistance values cannot be adjusted is called as fixed resistor.
A resistor where the resistance values can be adjusted is called as variable resistor.
The following information is about the characteristics of U.
- Have two poles.
- Attracted to magnetic materials
Based on the information above, what is U?
Circuit
Magnet
Electrostatic
Electromagnet
Which is the following is not the application of magnet and electromagnet?
Rubber
Compass
Credit Card
Electric bell
Which of the following is the symbol of variable resistor?
Mark (/) for energy source.
Sun
Geothermal
Electric
Wave
Lighting is ______that is formed during thunderstorms.
electricity
a sound wave
water
wind
Which description below about the dangers of electricity is wrong?
Electricity can make it hard to breathe.
Electricity can help you run faster.
Electricity can make you muscles tighten up.
Electricity can burn you.
Two objects have static electricity with the same charges. What would the objects do when placed near each other?
Repel
Attract
Nothing
Stick together
How can you tell when static electricity has been discharged?
Heat is released that can be felt.
Light is released and you can feel a shock.
Static electricity gives off many different colors.
The object begins to spin rapidly when it is shocked.
Which of the following is a good conductor of electricity?
a beach ball
a t-shirt
a water bottle
a car door
Current flows through the circuit when the circuit is in the ______condition.
Closed
Opened
No change
Disconnected
A magnetic field exists around
iron
copper
aluminium
moving charges
How many poles does the magnet have?
2
3
4
5
The like poles in a magnet
attracts
repels
expand
contract
The compass uses ______ to find the direction by travelers.
Electromagnet
Electricity
Magnet
None of the above
Where is a compass needle (that is, the north pole of the compass) directed if the compass is placed near a magnet bar?
Toward the north pole of the magnet bar
Toward the south pole of the magnet bar
Electrical current can easily travel through materials like metals. What are there types of materials called?
Insulators
Resistors
Batteries
Conductors
What are the two types of electricity?
Fast and slow electricity
Static and current electricity
Hot and cold electricity
Proton and electron electricity
The force of attraction in magnets increases as the distance between the poles:
increases
remains the same
decreases
none of them
Three 3-Ω and two 5-Ω light bulbs and a 24 V battery are connected in a series circuit. What is the current that passes through each bulb?
8A
3A
24A
4,8A
Three resistors. 4Ω, 8Ω and 16Ω are connected in parallel in a circuit. What is the equivalent resistance of this combination of resistors?
0.34Ω
30Ω
10Ω
2.3Ω
Which of the following are the correct statements for a parallel circuit?
I Has one path
II When one of the bulb breaks down, the other bulb will
not light up
III Has more than one path
IV When one bulb breaks down, the other bulb is still it
I and II
III and IV
II and III
I and IV
Which of the following statement about neutral point between two magnets is correct?
it does not have magnetic field
it has magnetic field
it pushes away two magnets
it attracts two magnets
The strength of the electromagnet depends on the:
I Magnitude of the current
II Length of the wire
III Number of coils
IV Pattern of magnetic field
I and II
II and III
I and III
I and IV
