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natita [175]
3 years ago
12

A net charge of 5.0 coulombs passes a point on a

Physics
2 answers:
liraira [26]3 years ago
7 0

Answer: 1.0 x 10^2

Explanation:

cupoosta [38]3 years ago
6 0

Answer : The average value of current is 1.0\times 10^2\ A.

Explanation :

It is given that,

Net charge, q = 5 C

Time, t = 0.05 s

The electric current is defined as the rate of change of electric charge.

I=\dfrac{q}{t}

I=\dfrac{5\ C}{0.05\ s}

I = 100\ A

or

I=1.0\times 10^2\ A

The average current is 1.0\times 10^2\ A.

Hence, this is the required solution.

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A generator produces 60 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted thro
aalyn [17]

Answer:

The percentage power lost in the transmission line if the voltage not stepped up is 50%.

Explanation:

Given that,

Current = 60 A

Voltage = 120 V

Resistance = 1.0 ohm

We need to calculate the power

Using formula of power

P=I\times V

Where,I =current

V = voltage

Put the value into the formula

P=60\times120

P=7200\ W

We need to calculate the percentage power lost in the transmission line

If the voltage is not stepped up

Then, the power loss

P'=I^2\times R

Put the value into the formula

P'=(60)^2\times1

P'=3600\ W

The percentage power loss P''

P''=\dfrac{P'}{P}\times100=\dfrac{3600}{7200}\times100

P''=50\%

Hence, The percentage power lost in the transmission line if the voltage not stepped up is 50%.

5 0
3 years ago
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Answer:

i think answer should be C

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The kinetic energy is 180
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