# How to calculate the current of a stream of electrons

• ravsterphysics
In summary, the conversation discusses the calculation of current in relation to the release of electrons from the moon Io towards the planet Jupiter. It is determined that the current can be calculated using the equation I=Q/t, where Q represents the charge and t represents the time. By using the given information of 2.6 x 10^26 electrons and their charge of 1.6 x 10^-19 coulombs, the current can be calculated.
ravsterphysics

## Homework Statement

The planet Jupiter has a moon Io. Volcanic activity on Io releases clouds of electrons which travel at high speeds towards Jupiter.

During a 15 s time period, 2.6 × 10^26 electrons reach Jupiter from Io.

Calculate the current.

## Homework Equations

I know current I = Q/t and that an electron has charge 1.6 x 10^-19 but I don't know how to relate this to the question. Can someone explain this to me please.

## The Attempt at a Solution

ravsterphysics said:
I know current I = Q/t and that an electron has charge 1.6 x 10^-19 **coulomb**
Yes.
So how much charge traveled to Jupiter from Io in how much time?

cnh1995 said:
Yes.
So how much charge traveled to Jupiter from Io in how much time?

doh! so we have 2.6 electrons and each electron has charge of 1.6 coulombs, so the current is: charge (electrons x charge) divided by time. Got it.

Thanks!

## 1. How do I determine the current of a stream of electrons?

The current of a stream of electrons can be calculated using Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R): I = V/R. This means that in order to calculate the current, you need to know the voltage of the circuit and the resistance of the material through which the electrons are flowing.

## 2. What is the unit of measurement for current?

The unit of measurement for current is the ampere (A), which is equal to one coulomb of charge per second. This unit is named after the French physicist André-Marie Ampère, who is known for his contributions to the study of electromagnetism.

## 3. Can the current of a stream of electrons be negative?

Yes, the current of a stream of electrons can be negative. This usually occurs when the direction of the electron flow is opposite to the conventional direction of current flow. In other words, if electrons are flowing from the negative terminal to the positive terminal of a circuit, the current will be negative. This is known as electron flow, as opposed to conventional current flow which assumes a flow of positive charges.

## 4. How does the current of a stream of electrons affect the behavior of materials?

The current of a stream of electrons can have various effects on materials, depending on their properties. Materials with low resistance allow for a larger current to flow through them, while materials with high resistance restrict the flow of current. Additionally, the flow of electrons can generate heat in certain materials, causing them to change their physical properties. This is the principle behind the operation of electric heaters and other heat-generating devices.

## 5. Is there a difference between the current of a stream of electrons and the flow of electricity?

No, the current of a stream of electrons and the flow of electricity refer to the same concept. The term "current" is used to describe the amount of charge flowing through a circuit per unit time, while "electricity" is a general term used to refer to the flow of electric charge. In both cases, the movement of electrons is being described.

Replies
12
Views
1K
Replies
2
Views
6K
Replies
3
Views
8K
Replies
4
Views
1K
Replies
1
Views
3K
Replies
7
Views
6K
Replies
2
Views
1K
Replies
4
Views
2K
Replies
8
Views
18K
Replies
2
Views
826