One of you shares your screen with the presentation on it.
One of you writes down the answers you come to in a word document (if this isn't possible, aks mr. Brands for help)
Now you're ready, start the questions
Slide 2 - Slide
1) What are the three quantities in Ohm's law?
Slide 3 - Slide
2) What is current? And its unit?
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3) What is potential difference? and its unit?
Slide 5 - Slide
4) What is resistance? and its unit?
Slide 6 - Slide
5) What is the relationship between current, potential difference and current?
Slide 7 - Slide
6) In a circuit a lightbulb gets changed for another lightbulb with a larger resistance. The potential difference over the circuit stays the same. What happens to the current in the circuit? Explain it in your own words and using ohm’s law.
Slide 8 - Slide
7) In a circuit a resistor gets replaced. With the new resistor the current has increased. What can you say about the resistance of the new resistor compared to the old one. Explain.
Slide 9 - Slide
8) What is the correct way of rewriting Ohm's law to use it for calculating current?
Slide 10 - Slide
9) What is the correct way of rewriting Ohm's law to use it for calculating potential difference?
Slide 11 - Slide
10) What current flows through the bulb of a 3.00-V flashlight when its resistance is 3.60 Ω?
Slide 12 - Slide
11) Calculate the resistance of a pocket calculator that has a 1.35 V battery and through which 0.200 mA flows.
Slide 13 - Slide
12
a) Find the voltage drop in an extension cord having a 0.0600−Ω resistance and through which 5.00 A is flowing.
b) A cheaper cord utilizes thinner wire and has a resistance of 0.300Ω . What is the voltage drop in it when 5.00 A flows?
