Podcast
Questions and Answers
What is the unit of electric current?
What is the unit of electric current?
- Ohm
- Watt
- Ampere (correct)
- Volt
Which material is a good conductor of electricity?
Which material is a good conductor of electricity?
- Rubber
- Glass
- Wood
- Copper (correct)
What happens when an electric current passes through a resistor?
What happens when an electric current passes through a resistor?
- The resistance remains the same
- The resistance becomes zero
- The resistance increases (correct)
- The resistance decreases
Flashcards
Ampere
Ampere
The unit of electric current, measuring the flow of electric charge.
Copper
Copper
A material that conducts electricity well due to its free electrons.
What happens when current passes through a resistor?
What happens when current passes through a resistor?
The resistor's resistance increases, slowing down the current flow.
Study Notes
Electric Current
- The unit of electric current is the Ampere (A)
- Electric current is the flow of electrons from high to low potential
Conductors of Electricity
- Copper is a good conductor of electricity
- Other materials like gold, aluminum, and iron are also good conductors
Resistance and Resistors
- When an electric current passes through a resistor, energy is converted into heat
- The resistor opposes the flow of electric current and reduces the voltage
- The amount of resistance depends on the material, length, and cross-sectional area of the resistor
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Description
Test your knowledge of electricity and its circuits with this quiz on Class 7 Chapter 14. Answer questions on the unit of electric current, conductors of electricity, and the effect of electric current passing through a resistor.
