Static Charge to Electric Current 16 November 2018 Static Charge to Electric Current Objectives Know what electric current is and how it can flow through some substances. HSW: AF2 – Understanding the applications and implications of science Used before in: lesson 1 – static electricity Will use again in: lesson 3 - PD PLTS: Team workers – Work collaboratively with others. Discuss with the person next to you who Benjamin Franklin was and what he did. Keywords Static, Current, Amp, Coulomb, Second, atom, nucleus, electron, proton, neutron, insulator, conductor, ion, negative, positive, earthed.

OUTCOMES All students should be able to know the units for current, charge and time and know how to discharge a charged object. Most students should be able to define what electric current is use the equation: current = charge / time Some students should be able to remember and rearrange the equation: current = charge / time.

Van de Graaff Your teacher will demonstrate the Van de Graaff generator to you again. In each case below describe how current is flowing. Spark in air Spooning charge Bouncing Balls Fluorescent bulb Charge flowing through students.

Electric Current What does it take for electric current to flow? What is electric current? Class definition: What is the equation?

Demonstrate your understanding Class questions link Your teacher will give out some questions. They have been rated by difficulty. Challenge yourself and try the hardest questions you think you can do in the time given. Once you have finished – try questions 8a-8d.

   Self assess EASIEST MEDIUM HARDEST 4a. 180C 4b. 7200C 4c. 2.5A 1d. 100C 1e. 240C 2a. 3A 2b. 2A 2c. 6A 2d. 0.25A 2e. 12A 3a. 3s 3b. 5s 3c. 15s 3d. 16s 3e. 2000s MEDIUM 4a. 180C 4b. 7200C 4c. 2.5A 4d. 1.2A 4e. 10.8A 5a. 1A 5b. 0.33A 5c. 2A 5d. 50mC 5e. 10A HARDEST 6a. 4s 6b. 200s 6c. 40s 6d. 0.25s 6e. 5s 7a. 42C 7b. 2.5A 7c. 3s 7d. 172800C 7e. 2400A 7f. 80000s      8a. How does electric charge flow in a wire? 8b. How does electric charge flow in a liquid? 8c. Draw an electric circuit and describe how the charge would flow. 8d. Draw a diagram of a line of students getting an electric shock by a Van de Graaff generator and describe how the charge flows.

Think Pair Share Electric Current 8a. How does electric charge flow in a wire? 8b. How does electric charge flow in a liquid? 8c. Draw an electric circuit and describe how the charge would flow. 8d. Draw a diagram of a line of students getting an electric shock by a Van de Graaff generator and describe how the charge flows. Some sentences to help: Electrical charges can move easily through some substances, in …… it is by the movement of ……….. In a liquid it is by the movement of ……….. Charge flows in a ………… because it is …………. from one end and ………… to the other end. This happens in a complete…………. A charged body can be discharged by connecting it to …………. with a conductor. Charge then ………….. through the conductor. circuit attracted wires flows ions conductor electrons repelled earth

8a. How does electric charge flow in a wire? 8b. How does electric charge flow in a liquid? 8c. Draw an electric circuit and describe how the charge would flow. 8d. Draw a diagram of a line of students getting an electric shock by a Van de Graaff generator and describe how the charge flows.

Brainiac Electric Fence Have a look at the video and answer these questions: Do they always get an electric shock? When do they? What is electric current? Can you remember the equation for electric current and recall the units? http://www.youtube.com/watch?v=-n1pSHzdahc