Form 3: Chapter 6.1 Electricity and Magnetism

The diagram shows a magnet, solenoid (coil of wire), and galvanometer. Which situation does not generate electric current?

• The magnet is moved in and out from the solenoid

• The magnet and solenoid are stationary (do not move)

• The solenoid is moved towards and backward from the magnet

• Both magnet and solenoids are moving towards each other

How does the upward and downward movements of wire at the magnet can generate electric current?

• The movement produces kinetic energy

• Magnetic field lines between magnet are being cut

The followings are non-renewable energy EXCEPT

• Nuclear energy

• Wind energy

• Petroleum

• Coal

Which of the followings is NOT used as energy source in thermal power station?

• Diesel

• Water

• Coal

• Natural gas

What is the correct energy change in a hydroelectric power station?

• Chemical energy --> Heat energy --> Kinetic energy --> Electrical energy

• Nuclear energy --> Heat energy --> Kinetic energy --> Electrical energy

• Gravitational potential energy --> Kinetic energy --> Electrical energy

The rotation of generator in power station creates ___________

• gravitational potential energy

• chemical energy

• kinetic energy

• electrical energy

_______________________ is an electric current that flows in one direction

• direct current

• alternating current

What type of electric current is shown by the oscilloscope in the diagram?

• Direct current

• Alternating current

Which of the following is using direct current?

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