12th Grade ESP - Electricity and Society

What are the two main types of electrical currents?

• Static current and Dynamic current

• Positive current and Negative current

• Linear current and Circular current

• Direct current (DC) and Alternating current (AC)

Why is it important to follow electrical safety measures?

• To encourage risky behavior

• To prevent accidents, injuries, and fires caused by electrical hazards.

• To make electrical work more challenging

• To increase energy consumption

Name one renewable energy source commonly used to generate electricity.

• Geothermal energy

• Wind power

• Hydropower

• Solar power

How does electricity impact society in terms of communication?

• Electricity only impacts communication during the day

• Electricity slows down communication processes

• Electricity has no impact on communication

• Electricity allows for the functioning of communication devices, enabling instant and widespread communication.

Explain the concept of alternating current (AC) in electricity.

• AC is an electric current that changes direction periodically and is widely used due to its ease of voltage conversion.

• AC is a direct current that flows in one direction only.

• AC is a form of electricity that does not involve voltage changes.

• AC is a type of current that is never used in household appliances.

What safety precautions should be taken when working with electricity?

• Wear shorts and sandals while working

• Use wet hands to handle electrical equipment

• Work alone without anyone nearby

• Wear appropriate PPE, ensure proper grounding, use insulated tools, avoid water, and turn off power before working.

What is the role of solar power in renewable energy generation?

• Solar power converts sunlight into electricity.

• Solar power is used for geothermal energy production.

• Solar power converts water into electricity.

• Solar power generates wind energy.

Discuss the environmental benefits of using wind energy for electricity production.

• Wind energy increases air pollutants and greenhouse gas emissions

• Using wind energy depletes water resources

• Using wind energy for electricity production reduces greenhouse gas emissions, air pollutants, conserves water resources, and helps mitigate climate change.

• Wind energy has no impact on climate change

How does electricity influence transportation systems in modern society?

• Electricity has no impact on modern transportation systems.

• Electricity enables the operation of electric vehicles, leading to a more sustainable and environmentally friendly transportation system.

• Electricity causes traffic congestion in transportation systems.

• Electricity leads to increased use of fossil fuels in transportation.

Differentiate between direct current (DC) and alternating current (AC).

• DC flows in one direction continuously, while AC changes direction periodically.

• DC flows in both directions simultaneously, while AC flows in one direction only.

• DC and AC have the same flow direction but differ in frequency.

• DC changes direction periodically, while AC flows continuously in one direction.