Question

A factory gets its electrical power from a generator two miles away The wires connecting the generator to factory terminals have a resistance of 0.5 ohm /miles when the generator supplies 10A to factory the terminal voltage at the generator is 120v Avoltmeter connected to factory terminals should then read

Answer 1

Answer:

Output voltage at the end of factory will be 110 Volts

Explanation:

Resistance of the wire is given as

$R = \rho L$

$R = 0.5 ( 2)$

$R = 1 ohm$

now we know by ohm's law

$\Delta V = i R$

$\Delta V = 10(1)$

$\Delta V = 10 volts$

so voltage drop across the wire is 10 volts and hence the terminal voltage at the end of factory will be

$V_{out} = 120 - 10$

$V_{out} = 110 V$

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Topic : Ohm's law

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