dheydar3506

24.03.2020 • 

Physics

A 20-cm long solenoid consists of 100 turns of a coil of radius r = 3.0 cm. A current of I_0 in the coiled wire produces a magnetic field of B_0 in the middle of the solenoid.
If we wish to produce a field that is 4-times larger, which of the following changes could work?

a) quadruple the number of turns in the 20-cm long solenoid.
b) half the length of the 100-turn solenoid but maintain 100 turns across that length.
c) quadruple the length of the 100-turn solenoid, but also double the radius of the coil.
d) half the length of the solenoid, and double the number of turns to 200 total turns.
e) double the current in the wire, and double the number of turns in the 20-cm long solenoid.
f) cut the radius of the coil to one-half.

Ответ:

journeewilliams735

21.01.2022

Physics

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Explanation:

length of the solenoid, l = 20 cm = 0.2 m

radius, r = 3 cm

current in the coil = Io

Magnetic field = Bo

The magnetic field due to the current carrying solenoid is

..... (1)

where, n is the number of turns per unit length.

so, increasing the number of turns by four times in 20 cm length solenoid, the magnetic field is 4 times. option (a)

And, by taking half the length of the solenoid, and the double of number of turns, the magnetic field due to the solenoid becomes 4 times. option (d)

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Ответ:

laiahlott

13.06.2021

Physics

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There are many principles that are classified under the Gestalt Principles. The Gestalt principles believe that any stimulus can be viewed in a very simple form. According to the given image, I can say that the square represents the Gestalt principle of PROXIMITY. Hope this helps.

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