Chapter 6: Electricity and Magnetism

Chapter 6: Electricity and Magnetism

by Leena Haryani Abdul Hadi

Poll

4. Which of the following is catagorized as renewable energy sources?

• petroleum

• cold

• water

• diesel

Multiple Choice

1. Induced current (Electricity) can be produced by

• Friction of magnet

• Boiling the water

• Changing in magnetic field (Cutting of magnetic field line)

• Throwing thing from high ground

Multiple Choice

2. In which arrangement does the LED light up?

• P,Q

• P,Q,R

• Q,R

Multiple Choice

3. Which of the following is catagorized as non-renewable energy sources?

• Wave energy

• Geothermal energy

• Biomass energy

• nuclear energy

Multiple Choice

4. Which of the following is catagorized as renewable energy sources?

• petroleum

• cold

• water 

• diesel

Multiple Choice

5. What is the function of steam in the thermal power plant shown in the diagram above?

• To rotate the turbine

• To produce electricity

• To heat up the turbine

• To be used in chemical reaction

Multiple Choice

6. Figure above shows a simple diagram of nuclear power plant. As similar to other power plants (thermal,hydro,wind), which of the part where strong magnets are in-placed.

• Reactor

• Generator

• Turbine

• Condensor

Multiple Choice

7. Which of the following is correct for the energy change happened in a biomass power station.

• Chemical energy > Kinetic energy > Electrical energy

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

• Heat energy > Kinetic energy > Electrical energy

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

​Direct Current (DC)

​Alternating Current (AC)

​Cathode Ray Oscilloscope (CRO)

Multiple Choice

8. Direct current (DC) are electric current that flows in on direction only. Which of the following are not the sources of DC current?

• Batteries

• Solar cells

• Car accumulators

• Back-up generator

Multiple Choice

9. Alternating current is an electric current that ( )

• flows in specific direction depend on the type of circuit

• flows in constantly reversing direction

• flows in one direction only

• flows in unknown directions

Multiple Choice

10. Which of the following is not the function of Cathode Ray Oscilloscope (C.R.O.)?

• Show the voltage change for DC and AC

• Show differences in shape of graph for DC and AC

• Show the direction of current for DC and AC

• Show the resistant for DC and AC

Multiple Choice

11. Transformer is a device for changing the voltage of ( )

• Alternating current (AC)

• None of above

• Direct current (DC)

• Direct and alternating current (DC & AC)