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3 years ago

The heating element of an iron operates at 110 V with a current of 9A. (a) What is the resistance of the iron?

Physics

1 answer:

Dmitrij [34]3 years ago

3 0

Answer:

(A) 12.222 ohm (B) 990 W

Explanation:

We have given the voltage of the heating element V = 110 V

The current in the heating element i = 9 A

(a) According to ohm's law V =iR

So $110=9\times R$

$R=\frac{110}{9}=12.222ohm$

(b) The power dissipated in the resistor is given by $P=i^2R=9^2\times 12.222=990W$

So the power dissipated = 990 W

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Makovka662 [10]

Answer:

Explanation:

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for constructive interference in thin film the condition is

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2 x 1.28 x t = 605 /2

t = 118.16 nm .

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4 years ago

Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of 5.49 × 1014 hz.

Tcecarenko [31]

The energy of a photon is given by
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therefore we can use the previous equation to calculate the energy of each photon of the green light emitted by the lamp:
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4 years ago

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