Arduino Safety Quiz

1. Which of the following is a potential hazard from dealing with electricity?

• Shock

• Burns

• Nerve Damage

• Irregular Heartbeat

• All of the options

Answer explanation

All these are potential dangers when working with electricity. Of course, the more current and voltage, the higher the safety risk.

When you are working with circuits, it is OK to do what?

• Work on a metal surface

• Have food or drink nearby

• Work with power supplied to the circuit

• Wear metal jewellery

• None of these

Answer explanation

When you work with circuits, you should minimize the risk of electricity passing from the circuit to you. This includes working on an insulated surface and removing all metal jewelry that could contact the circuit. You should always keep the work surface clean.

Beverages and other liquids should be kept clear of the work area to avoid spills. When you are working on a circuit, never work on it with power supplied to the circuit. Supplying power should be the last step in completing the circuit.

If a person is being shocked by a circuit and is unable to remove himself or herself from the circuit, what is the first thing you should do?

• Tap them to see if they are OK

• Pull them away from the circuit

• Turn off power to the circuit

• Go to fetch help

Answer explanation

When a person is “frozen” to a circuit and cannot remove himself or herself from the circuit, do not touch the person. Otherwise, the electricity could pass to you. First, you should try to cut power to the circuit. If you are unable to cut power, then try to use an insulated tool such as a wooden broomstick to pry the person from the circuit. When the person is free from the electric current, assess the situation and call for help if needed.

Supplying power to a circuit should be done when?

• at the beginning of building the circuit

• at any point while building the circuit

• at the end when the circuit is complete

Answer explanation

Always supply power to the circuit after all other components are wired. Supplying power to the circuit should be the last step in completing the circuit. When you are working on a circuit, always cut power to the circuit first.

If an electronic component is damaged, what should you do?

• You can still use it

• Replace it

• Repair it before using it

Answer explanation

Never use broken or damaged components. Find a replacement to use.