electricity?

What is electricity?

• Electricity is the flow of protons

• Electricity is the flow of electrons

• Electricity is the flow of neutrons

• Electricity is the flow of atoms

Which one is a source of energy in an electric circuit?

• Electrical wires

• Light bulb

• Switch

• Battery

Current is the rate of flow of electrons. Which one has the largest current?

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You use one AAA battery in your alarm clock. Calculate the power for this battery

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• Power = Voltage x Current= 1.5 x 8 = 12W

• Power = Voltage x Current= 1.5 x 1.2 = 1.8W

• Power = Voltage x Current= 1.5 x 2.4 = 3.6W

Ahmed wants to use this lamp for 2 hours. Calculate the electrical energy, if Power = 3.6W.

• Electrical energy = Power x Time = 3.6 x 2= 7.2 kWh

• Electrical energy = Power x Time = 3.6 x 1= 3.6 kWh

• Electrical energy = Power x Time = 3.6 x 4= 14.4kWh

• Electrical energy = Power x Time = 3.6 x 3= 10.8kWh

Which one is the schematic symbol for a battery?

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Look at this circuit. Which one is the schematic drawing for this circuit?

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Look at these circuit diagrams. Which one is a parallel circuit?

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What do we call the moving parts of a robot which are connected to the robot’s motors?

• Mechanical system

• Electrical system

• Control unit

• Design thinking

Which stage of the design process do you collect information, notes and images related to your project?

• Analyse the problem

• Research and planning

• Design problem or brief

• Produce the final product