Electrical Safety and Energy Concepts

Why does short circuit cause fire?

• Because the little current produced cannot generate heat

• Because the large current produce cannot generate heat

• Because the large current produced can generate a lot of heat that could start a fire

• Because the little current produced can generate heat that could start a fire.

Which of the following statement is NOT a primary purpose of earthing?

• To interrupts or stops the current in a circuit

• To avoid or minimize the danger of electrocution

• To avoid fire due to earth leakage of current through undesired path.

• To ensure that the potential of a current carrying conductor does not rise with respect to the earth than its designed insulation.

Which of the following best describes the function double insulation?

• To prevent electrical parts in contact with the outer casing of the device.

• To provide alternative route of upsurge current in case of grounded circuit.

• To reduce the resistance of the appliance.

• To cut the circuit in case of overloading

How do you prevent from experiencing electric shock at home?

• Recycle blown up fuse

• Regularly check household wirings

• Plug electrical appliances With wet hand.

• Continue using worn-out extension wire

Why is earthing used at home?

• To prevent short circuit

• To cut the circuit in case of overloading

• To reduce the resistance of the appliance

• To provide alternative route of upsurge current in case of grounded circuit.

The fuse at home has “blown” up many times. Which of the following must NOT be done to solve the problem and prevent it from happening again?

• Buy fuse with standard amperage rating.

• Do not use all appliances simultaneously.

• Call your barangay electrician to fix your electrical problem.

• Use jumper wire or cover the blown fuse with available silver paper.

How can you differentiate the standard unit in electrical energy and electrical power?

• The unit for electrical energy is Joule while electrical power is watt.

• The unit for electrical energy is Celsius while electrical power is watt.

• The unit for electrical energy is Fahrenheit while electrical power is watt.

• The unit for electrical energy is watt while electrical power is Joule.

Which of the following differentiates electrical energy from power?

• Electrical energy unit used Watt while Electrical power is Joule.

• Electrical energy unit used Joule while Electrical power is Watt.

• Electrical energy unit used Calorie while Electrical power is Watt.

• Electrical energy and electrical power both used unit Watt.

Which of the following best describe electrical energy and electrical power?

• Electrical energy is the rate at which work is done on an electrical system while electrical power is the rate of consumption of electrical energy.

• Electrical energy is the rate of consumption on an electrical system while electrical power is the work done.

• Electrical energy is the rate of electrical system while electrical power is the work done.

• Electrical energy is the rate of consumption on an electrical circuit while electrical power is the work done.

What will happen if one light bulb is removed from a series circuit?

• The other bulbs will not work.

• The other bulbs will get dimmer.

• The other bulbs will get brighter.

• The battery will become stronger.