An insulated wire of diameter 1.0 mm and negligible resistance is wrapped tightly around a cylindrical core of radius 5.0 cm and length 30 cm to build a solenoid. what is the energy stored in this solenoid when a current i = 0.20 a flows through it? (μ0 = 4π × 10-7 t ∙ m/a)

5.92 x 10⁻⁵ J

Explanation:

 = Total number of turns

 = diameter of insulated wire = 1 mm = 0.001 m

 = length of the cylindrical core = 30 cm = 0.30 m

Length is given as

=

0.30 = (0.001)

 = 300

= radius of the core = 5 cm = 0.05 m

Area is given as

= πr²

= (3.14) (0.05)²

= 0.00785 m²

Inductance of the solenoid is given as

= 0.00296

= current in the solenoid = 0.20 A

Energy stored in the solenoid is given as

= 5.92 x 10⁻⁵ J

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

do you have a formula possibly