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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Chemical Effects of Electric Current , Class 8, Science. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
The substance through which current can flow easily are called
- a)Good conductor
- b)Insulator
- c)Resistor
- d)Poor conductor
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are av...
Good conductors of electricity allow electricity to pass through it. Metals are generally good conductors.
These are the materials which offer very low resistance to the flow (or in path of) of electric current.
In other words these materials have very low resistivity.
Eg: copper, aluminium
Most Upvoted Answer
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are av...
The substance through which current can flow easily is called a good conductor. Let's understand why the correct answer is option 'A' by exploring the properties of conductors and other substances.
Conductors:
- Good conductors of electricity have free electrons that are loosely bound to their atoms.
- These free electrons are able to move freely through the material when an electric potential difference is applied across it.
- Metals such as copper, aluminum, silver, and gold are excellent conductors of electricity.
- These materials have a large number of free electrons, allowing electric current to flow easily through them.
Insulators:
- Insulators are substances that do not allow electric current to flow through them easily.
- They have tightly bound electrons that are not able to move freely.
- Examples of insulators include plastic, rubber, glass, and wood.
- These materials have very few free electrons, making it difficult for electric current to pass through them.
Resistors:
- A resistor is a device that is used to control the flow of electric current in a circuit.
- Unlike conductors, resistors are designed to oppose the flow of electrons.
- They have a higher resistance, which restricts the flow of current.
- Resistors are often made of materials such as carbon, metal alloys, or semiconductors.
Poor conductors:
- Poor conductors, also known as semiconductors, have properties that lie between conductors and insulators.
- They can conduct electricity under certain conditions but not as easily as good conductors.
- Semiconductors like silicon and germanium are widely used in electronic devices.
In conclusion, the substance through which current can flow easily is called a good conductor. Good conductors have free electrons that can move easily through the material, allowing electric current to flow. Insulators, on the other hand, have tightly bound electrons that do not allow current to pass through easily. Resistors are designed to oppose the flow of electrons, and poor conductors (semiconductors) have properties between conductors and insulators.
Conductors:
- Good conductors of electricity have free electrons that are loosely bound to their atoms.
- These free electrons are able to move freely through the material when an electric potential difference is applied across it.
- Metals such as copper, aluminum, silver, and gold are excellent conductors of electricity.
- These materials have a large number of free electrons, allowing electric current to flow easily through them.
Insulators:
- Insulators are substances that do not allow electric current to flow through them easily.
- They have tightly bound electrons that are not able to move freely.
- Examples of insulators include plastic, rubber, glass, and wood.
- These materials have very few free electrons, making it difficult for electric current to pass through them.
Resistors:
- A resistor is a device that is used to control the flow of electric current in a circuit.
- Unlike conductors, resistors are designed to oppose the flow of electrons.
- They have a higher resistance, which restricts the flow of current.
- Resistors are often made of materials such as carbon, metal alloys, or semiconductors.
Poor conductors:
- Poor conductors, also known as semiconductors, have properties that lie between conductors and insulators.
- They can conduct electricity under certain conditions but not as easily as good conductors.
- Semiconductors like silicon and germanium are widely used in electronic devices.
In conclusion, the substance through which current can flow easily is called a good conductor. Good conductors have free electrons that can move easily through the material, allowing electric current to flow. Insulators, on the other hand, have tightly bound electrons that do not allow current to pass through easily. Resistors are designed to oppose the flow of electrons, and poor conductors (semiconductors) have properties between conductors and insulators.
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Community Answer
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are av...
As by the name conductor it shows that it conducts the electricity well
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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Chemical Effects of Electric Current , Class 8, Science. You can practice these practice quizzes as per your speed and improvise the topic.Q.The substance through which current can flow easily are calleda)Good conductorb)Insulatorc)Resistord)Poor conductorCorrect answer is option 'A'. Can you explain this answer?
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