The power is transmitted from a power house on high voltage ac because(a) Electric current travels faster at higher volts(b) It is more economical due to less power wastage(c) It is difficult to generate power at low voltage(d) Chances of stealing transmission lines are minimized
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answer : option (b) It is more economical due to less power wastage.
explanation : we know, power = iV
where i is current through wire and V is the potential difference across the wire.
so, the power can be transmitted in two ways
1. either an high voltage and low current 2. high current and low voltage.
but when power transmitted in high current, hear loss will be higher [ as H = i²R ] . but when power transmitted in higher voltage , heat loss will be lower.
that's why The power is transmitted from a power house on high voltage ac because It is more economical due to less power wastage.
explanation : we know, power = iV
where i is current through wire and V is the potential difference across the wire.
so, the power can be transmitted in two ways
1. either an high voltage and low current 2. high current and low voltage.
but when power transmitted in high current, hear loss will be higher [ as H = i²R ] . but when power transmitted in higher voltage , heat loss will be lower.
that's why The power is transmitted from a power house on high voltage ac because It is more economical due to less power wastage.
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