What makes work positive (electricity)

In summary, the concept of positive and negative work is determined by the direction of the force and displacement. For attractive charges, the work done is positive and the potential energy difference is negative, while for repulsive charges, the work done is negative and the potential energy difference is positive.
  • #1
Eats Dirt
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I don't really understand the concept of what makes work positive or negative for example if 3 charges are brought together from infinite what is the work done on them?

I am extremely confused about what make work positive and negative.
 
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  • #2
Hi Eats Dirt! :smile:

Potential energy = minus the work done by a conservative force.

And work done = force "dot" displacement

so if the charge is attractive (like gravity), the force is in the same direction as displacement, so the work done by the force is positive, and the potential energy difference is negative

but if the charge is repulsive, the force is in the opposite direction to displacement, so the work done by the force is negative, and the potential energy difference is positive :wink:
 

What is electricity and how does it make work positive?

Electricity is the flow of electric charge through a conductor. This flow of electric charge is what powers electronics and appliances, making our lives easier and work more efficient. It is the energy source that allows us to do work and create positive outcomes.

What are the benefits of using electricity in the workplace?

The use of electricity in the workplace has numerous benefits. It allows for faster production, automation of tasks, and reliable power for equipment and tools. Additionally, it reduces the need for manual labor and increases safety in the workplace.

Can electricity have negative effects on work?

While electricity has many positive effects on work, it can also have negative effects if not used properly. Electrical hazards such as shocks and fires can occur if electrical equipment is not maintained or used correctly. It is important to follow safety procedures and regulations to prevent any negative effects on work.

How does electricity impact the economy and job market?

Electricity plays a crucial role in the economy and job market. It is a fundamental resource for many industries and businesses, creating job opportunities and driving economic growth. Without electricity, many businesses and industries would not be able to operate efficiently, leading to a negative impact on the economy and job market.

What advancements have been made in the field of electricity and its impact on work?

Over the years, there have been many advancements in the field of electricity that have positively impacted work. These include the development of renewable energy sources, more efficient and cost-effective technology, and improved safety measures. These advancements have improved the overall productivity and efficiency of work, making it more positive for employees.

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