required practicals

Question 1

How can you investigate current and voltage characteristics of components?

Answer 1

• Set up a circuit with your chosen component, an ammeter, voltmeter, battery and variable resistor.
• Record current and volatage. Slide the variable resistor 5 times and record current and voltage after each time.

Question 2

How would you find out which metal is the most conductive?

Answer 2

• Place a pin on the end of each metal and heat the middle. The pin that drops first is the most conductive. (because heat travelled to the end faster)

Question 3

How can you tell which colour is the best absorber of heat?

Answer 3

• Put black tape on the end of one thermometer and white tape on the other. Have them the same distance away from a heat lamp and record their starting temperetures. Record their temperetures every minute for 5 minutes after turning the lamp on.
• The biggest tempereture change is the best absorber. (black)