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Telecommunications Equipment Installer/Repairer

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AVG. SALARY

$69,310

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EDUCATION

Post-secondary training +

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JOB OUTLOOK

Stable

Real-Life Activities

Real-Life Math -- Solution

You need to calculate the resistance. This is what you know:

V = 40
i = 10

This is the formula:

R x i = V

You need to isolate R. You do that by dividing each side by 10.

R x i = V
R x 10 = 40
R = 4 ohms

Now you need to calculate the percentage difference. You know the resistance for a working line is 2 ohms.

Percentage = 4 ohms / 2 ohms x 100
Percentage = 200

There is a 200 percent difference. It looks like your hunch was right!

You need to be comfortable with math as a telecom tech.

Donna Best says the use of math depends on where you work. "It all depends on the job," she says. "You can certainly get by without it because [telecommunications] is more technical."

But there are a number of common tasks that require math. "If you are installing a switch, and you are going to have 500 users, you sort of have to figure out how many trunk [lines] you are going to need. It is usually one per every 10 people."


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