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3 years ago

What is the advantage of delivering electricity to homes through high voltage lines?

Chemistry

2 answers:

oksano4ka [1.4K]3 years ago

7 0

Delivering electricity to homes through high voltage lines, reduces the power loss that is caused by Joule's heating.

We know that:

P=VI

Where, P is power, V is the voltage and I is the current.

So if we keep P constant and make then voltage up, I must goes down.

According to Joule's first law : Power of heating generated by a conductor is directly proportional to the product of its resistance and the square of the current.

Now using the equation:

Q=I²Rt

Where Q is the heat generated, I is the current , R is the resistance and t is the time.

So by reduced I, heat loss will be reduced.

Leno4ka [110]3 years ago

7 0

The power loss due to Joule's heating is reduced in this case.

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1.00 L of a gas at STP is compressed to 473mL. What is the new pressure of gas?

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Hello!

1.00 L of a gas at STP is compressed to 473 mL. What is the new pressure of gas?

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Vo (initial volume) = 1.00 L

V (final volume) = 473 mL → 0.473 L

Po (initial pressure) = 1 atm (pressure exerted by the atmosphere - in STP)

P (final pressure) = ? (in atm)

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$\boxed{\boxed{P \approx 2.11\:atm}}\:\:\:\:\:\:\bf\green{\checkmark}$

Answer:

The new pressure of the gas is 2.11 atm

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