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Talja [164]
3 years ago
11

Which two statements are true about all generators?

Physics
2 answers:
Alekssandra [29.7K]3 years ago
7 0

The true statements about generators would be :

They convert motion energy to electric energy

They use the relative motion of a magnet and a coil of wire.

Explanation:

Generators use the energy of the rotating coil in relative motion with magnets to induce a current within the wire. Generators are devices that convert energy into a voltage by the relative motion of the magnet and a coil that changes flux.

svet-max [94.6K]3 years ago
7 0
I believe the correct answer from the choices listed above is the first and the second options. The true statements about generators would be that they <span>convert motion energy to electric energy and th<span>ey have a fixed pair of magnets and a rotating metal coil. Hope this answers the question. Have a nice day.</span></span>
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natali 33 [55]
<h2>Hello!</h2>

The answer is: A. 4.5 L

<h2>Why?</h2>

According to the conversion factor which states that:

1gal=3.78L

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4 years ago
Assume that, as the battery wears out, the voltage decreases at 0.03 volts per second and, as the resistor heats up, the resista
liraira [26]

Answer:

\frac{dI}{dt} =-3*10^-^4amps/sec

Explanation:

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Resistance increase at \frac{dR}{dt}=0.02ohms /sec

Resistance at R=100ohms

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Generally the equation for ohms law is mathematically represented as

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Therefore

       \frac{dV}{dt} =R\frac{dI}{dt} +I\frac{dR}{dt}

Generally making \frac{dI}{dt} subject of the formula in the above equation mathematically gives

       \frac{dV}{dt} =R\frac{dI}{dt} +I\frac{dR}{dt}

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       \frac{dI}{dt} =\frac{1}{R}  (\frac{dV}{dt} -I\frac{dR}{dt})

Therefore

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Generally it is given that the change in current is

       \frac{dI}{dt} =-3*10^-^4amps/sec

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