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3 years ago

A transformer has a primary coil with 600 turns and a secondary coil

1 answer:

6 0

Number of turns in the primary Np = 600
Number of turns in the secondary Ns = 300
Output voltage Es = 320 volts
Input voltage Ep = ?
Assuming the transformer to be ideal,
Np/Ns = Ep/Es
Ep/Es = 600/300 = 2
<span>Ep = 320*2 = 640 volts </span>

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White raven [17]

What is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the frequency of the oscillating body is 50Hz

<h3>What is frequency?</h3>

Frequency of an oscillating body can be defined as the number of complete oscillations per unit time

Frequency is measured in hertz (Hz).

Also, the frequency of 1Hz is one oscillation per second.

frequency = number of oscillations/ time taken

frequency = 500/10 = 50 Hz

Thus, what is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the frequency of the oscillating body is 50Hz

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2 years ago

What is the current through an electric heater with a resistance of 38  when the potential difference is 240 V?

Zinaida [17]

$\bf{ \underline{Given:- }}$

$\sf• \: Resistance \: (R) \: = 38 \: Ω$

$• \sf \: Potential \: difference \: (V) \: = 240 \: v$

$\bf{ \underline{To \: Find:- }}$

$• \sf \: The \: current \: through \: an \: electric \: heater.$

<h2> $\bf{ \underline{ Solution :-}}$ </h2>

$\bf \red{•\: The \: formula \: of \: Current \: (I) = \frac{V}{R}}$

$\sf \rightarrow I = \frac{240}{38}$

$\sf \rightarrow I = 6.32$

$\sf \pink{Answer :- \: The \: current \: through \: an \: electric \: heater \: is \: 6.32 \: A.}$

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3 years ago

When two systems in contact are not at the same temperature, _____ occurs.

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The answer is "heat transfer."

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3 years ago

A bungee-jumping company operates on a bridge 200 m above the ground. They use bungee cords that are 100 m when they are unstret

zubka84 [21]

Answer:

m = 63.7 kg

Explanation:

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$U = mgH$