Question

How does the power voltage rating of a device help us to decide the types of connecting wire to use?

Answer 1

Answer:

We know that P = VI or I = P/V.  Thus, the current flowing through a device is directly proportional to its power.  Thus, knowledge of the power-voltage rating of a device helps us to know the current flowing through it. This, in turn, helps us to decide about the type of leads to be used for it.  We use thick wires (or leads) if the current flowing is more than 5 A.  For currents less than 5A, we use relatively thinner wires (or leads).

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Answer 2

The high power voltage rating devices, the connecting wires used must have low resistance. Explanation:

Power :

Power is equal to the multiplication of voltage and current.

In mathematically,

$P=VI$

Where, P = power

V = voltage

I = current

We konw that,

Current :

The current is equal to the voltage divided by resistance.

In mathematically,

$I=\dfrac{V}{R}$

Where, V = voltage

R = resistance

So, for high power voltage rating devices, the connecting wires used must have low resistance.

If the current flowing more then 5 A then we use thick wire.

Hence, The high power voltage rating devices, the connecting wires used must have low resistance.

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Topic : power voltage

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