Electricity

1. 1. What is the unit of electric current?

• A. Ampere 

    

• B. Volt

    

• C. Ohm

   

•   D. Watt

1. 2. Which material is a good conductor of electricity?

• A. Wood 

    

• B. Plastic

    

• C. Copper

   

•   D. Glass

1. 3. What is the function of a fuse in an electrical circuit?

• A. To increase resistance 

    

• B. To regulate voltage

    

• C. To prevent overloading

   

•   D. To generate electricity

1. 4. What is the SI unit of electric charge?

• A. Ampere-hour 

    

• B. Coulomb

    

• C. Ohm

   

•   D. Watt-second

1. 5. What property of a material determines its resistance to the flow of electric current?

• A. Conductivity 

    

• B. Voltage

    

• C. Magnetism

   

•   D. Density

1. 6. What is the function of a diode in an electrical circuit?

• A. To increase resistance 

    

• B. To regulate voltage

    

• C. To allow current flow in one direction

   

•   D. To store electrical energy

1. 7. What is the flow of electric charge through a conductor called?

• A. Voltage 

    

• B. Current

    

• C. Resistance

   

•   D. Circuit