- a. Define the following terms with respect to electrical circuit: i. Ampere (2 Marks) ii. Voltage (2 Marks) b. Explain the main function of a Light-Emitting Diode (LED). [2 Marks] c. State the Kirchhoff's current law (2 Marks) d. Explain how the field of semiconductor impacts Information Technology. [3 Marks] e. Discuss the importance of mixed signal electronics in real world systems. [3 Marks] f. Outline the primary function of a Zener diode hence explain how it differs from a regular diode. [3 Marks] g. State TWO factors that determine an LED's color,and how you can change the LED's emission color. [3 Marks] h. A light bulb draws 0.5A current at an input voltage of 240 V. Determine the resistance of the filament (3 Marks) i. A load generally refers to a piece of equipment konnected to the output of an __
- 3. Which hammer delivers more energy?Explain your reasoning.
- 7.According to the particle model,which has more energy blue light or red light? Explain your reasoning. __
- The amount of thermal energy is __ kJ in order to change 15.0 mol of water at 100 degrees celcius from liquid to vapour, without any change in temperature. (refer to data sheet, pay attention to significant digits)
- Slide 6: Connection to Optics Unit:Electromagnetic Spectrum Explain which part of the electromagnetic spectrum is responsible for warming the Earth. does electroma metic radiation interact with the Earth's atmosphere? Include a diagram representing the Greenhouse Effect (draw on paper and insert image into your slide, or create the diagram digitally,but it has to be your creation, not taken/copied from online sources) Slide 7: Connection to Chemistry Unit:Greenhouse Gases DED
