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hebrew1148
16.03.2020 •
Physics
A coil is connected in series with a 19.0 kΩ resistor. An ideal 50.0 V battery is applied across the two devices, and the current reaches a value of 2.20 mA after 2.80 ms. (a) Find the inductance of the coil.
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Ответ:
inductance of the coil 29.3767 H
Explanation:
given data
resistor R = 19.0 kΩ = 19 × 10³ Ω
potential applied V = 50.0 V
current I = 2.20 mA = 2.20 ×
A
time t = 2.80 ms = 2.80 ×
s
solution
we know for maximum current in circuit that is
current = V ÷ R .........1
current =![\frac{50}{19\times 10^3}](/tpl/images/0548/5122/b2378.png)
current = 2.63 ×
A
so at time t = 0
t =
L = 29.3767
Ответ:
A stainless steel refrigerator door, the body parts of cars, and file cabinets are magnetic because they are made of metal and magnets stick to them.
Explanation: this is the sample response on edge.
hope this is helpful (: