3 Questions
What is the unit of electric current?
Ampere
Which material is a good conductor of electricity?
Copper
What happens when an electric current passes through a resistor?
The resistance increases
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
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.
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