1. Chapter 5 (Ohm’s Law) **Hand in Extra Assignment  Prepare for the lab  Do the lab  Complete the lab write up  Hand in the formal lab for Monday

3. - Ohm’s Law explains the relationship between voltage (V), current (I) and resistance (R) - Used by electricians, automotive technicians, stereo installers

4. -It is the push or pressure behind current flow through a circuit, and is measured in (V) volts.

5.  Current refers to the quantity/volume of electrical flow. Measured in Amps (A)

6.  Resistance to the flow of the current. Measured in Ohms

8. V = Voltage (Volts = V) I = Current (Amperes = A) R = Resistance (Ohms = Ω)

9. 1. Assuming the resistance does not change: As voltage increases, current increases. as voltage decreases, current decreases. 2. Assuming the voltage does not change: As resistance increases, current decreases. As resistance decreases, current increases.

10. Multi meters/ DVOM

11.  Why do we need resistors  To decrease the amount of voltage applied to a component  The value of the resistor is marked on the body using coloured rings

14.  Series circuit :  One pathway for current to flow.  Example: Old Christmas lights

15.  More then one path way for current to flow.  Used in most electrical vehicle circuits.

16. 12

18. E8 – lesson 4 E9 – lesson 4

20.  The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the effect on the dependent variable is observed and recorded.independent variabledependent variable

21. For example, a scientist wants to see if the brightness of light has any effect on a moth being attracted to the light. The brightness of the light is controlled by the scientist. This would be the independent variable. How the moth reacts to the different light levels (distance to light source) would be the dependent variable.

22. In reality, the data we get is not the same as what we get in theory. Why? Because when we calculate numbers in theory, we are dealing with an ideal system. In reality there are sources of error in every aspect, which make our numbers imperfect.