18 Questions
Which type of materials allow charges to pass through them easily?
Conductors
What materials are considered non-conductors?
Insulators
Which type of elements have properties of both metals and nonmetals?
Metalloids
What do free electrons in a metal allow the metal to do?
Conduct electricity
What are the positive and negative ions in a battery responsible for?
Allowing electricity to flow through the electrolyte
What type of materials have the ability to behave as either a conductor or an insulator under specific conditions?
Semiconductors
If a conductor is 40 meters long and has a resistance of 10 ohms, what would be the resistance of a conductor of the same material and diameter, but 80 meters long?
30 ohms
Among the materials listed in Table 2, which material has the highest resistance per 100m length with a 1 mm2 cross-sectional area?
Cast iron
Why is gold often used to plate contacts and connectors despite having higher resistance than copper?
Gold does not corrode easily.
Which material is suitable for wiring due to low resistance, low cost, fair resistance to corrosion, and good flexibility?
Copper
Among silver, gold, and aluminum, which material is known to be very suitable for relay contacts and printed circuit boards due to its low resistance?
Silver
Why is tungsten practical for bulb elements even though it has higher resistance compared to other materials?
Tungsten can operate well at high temperatures.
Which type of material has a positive temperature coefficient of resistance?
Copper
What type of material has a negative temperature coefficient of resistance?
Semiconductors
Which material would be suitable for heating elements due to its properties?
Nichrome
What type of conductor would have high resistance as wires?
Steel
What is the sign of the temperature coefficient of resistance for materials like silver and copper?
Positive
Which type of material is commonly used in most automotive temperature sensors?
Semiconductors
Test your knowledge on components that enable the conversion of electrical energy into other forms of energy. Learn about conductors and their role in allowing electric charges to pass through. Explore how electrical energy is transformed into kinetic energy and heat energy in vehicles.
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