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Neko [114]
3 years ago
11

A transformer supplies 60 watts of power to a device that is rated at 20 volts. The primary coil is connected to a 120-volt ac s

ource. What is the current I1 in the primary coil
Physics
1 answer:
Nataly [62]3 years ago
4 0

Answer:

I = 0.5 A

Explanation:

Given: P=60 Watts, Voltage supply V = 120 Volts (for primary coil)

Solution:

we have P = V I

⇒ I = P /V = 60 Watts / 120 Volts

I = 0.5 A

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The terminal velocity is not dependent on which one of the following properties? the drag coefficient 1 the force of gravity 2 c
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Explanation:

When a body or object falls, basically two forces act on it:  

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V is the velocity  

A is the transversal area of the object

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2. Its <u>weight </u>due to the gravity force W:  

W=m.g

(2)

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m is the mass of the object

g is the acceleration due gravity  

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D=W (3)

{C}_{d}\frac{\rho V^{2} }{2}A=m.g  (4)

V=\sqrt{\frac{2m.g}{\rho A{C}_{d}}}  (5) This is the terminal velocity

As we can see, there is no "falling time" in this equation.

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Explanation:

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