Answer:
a) L = 3.29 10⁻⁴ H, b)U = 5.33 10⁻² J
Explanation:
a) The inductance is a solenoid this given carrier
L =
The magnetic field inside the solenoid is
B = μ₀
hence the magnetic flux
Ф_B = B. A = μ₀
we substitute in the expression of inductance
L = N² μ₀ A /l
let's find the area of each turn
A = π r²
A = π 0.02²
A = 1.2566 10⁻³ m²
let's calculate
L = 250² 4π 10⁻⁷ 1.2566 10⁻² / 0.3
L = 3.29 10⁻⁴ H
b) The stored energy is
U = ½ L i²
let's calculate
U = ½ 3.29 10⁻⁴ 18²
U = 5.33 10⁻² J
Answer:
u will wet not important handkirship and then wipe it.
Explanation:
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Answer:
D either positive or negative.
Explanation:
an atom is converted into ion only when the the atom lose or gain an electron
If an isolated atom will gain excess electrons then in that case the atom will become a negative ion
While if the atom will lose the electron then it will convert into a positive ion.
so ion may be positive or negative both kind
It may either lose or gain electrons one or more than one
so here correct answer would be
D either positive or negative.
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Answer:
The correct option is B. II and III only
Explanation:
kinetic can be transformed to potential energy and potential energy can be transformed to potential energy.
potential energy of the body is the stored energy of of an body.
for example if a spring at rest in given some initial velocity to compress the spring when the spring comes to momentary rest the kinetic energy given to the spring is concerted to potential energy which is stored in the spring
and when it comes back to its original position the potential energy of the spring is converted to kinetic energy