Answer:
Ns = 293 turns
Explanation:
The magnetic field of a solenoid is given as follows:
B = μ₀NI/L
where,
B = Magnetic Field = (40.5 Gauss)(1 T/10000 Gauss) = 4.05 x 10⁻³ T
μ₀ = Permeability of Free Space = 4π x 10⁻⁷ T/Am
N = No. turns in solenoid = ?
I = Current = 0.05 A
L = Length = 10 cm = 0.1 m
Therefore,
4.05 x 10⁻³ = (4π x 10⁻⁷ )(N)(0.05)/0.1
N = (4.05 x 10⁻³)/(6.28 x 10⁻⁷)
N = 6446 turns
Now, we use turns ratio formula for transformer:
Np/Ns = Vp/Vs
where,
Np = No. of turns in primary coil = 6446 turns
Ns = No. of turns in secondary coil = ?
Vp = Primary Voltage = 220 V
Vs = Secondary Voltage = 10 V
Therefore,
6446 turns/Ns = 220 V/10 V
Ns = 64460 turns/220 V
<u>Ns = 293 turns</u>
Answer:
Explanation:
Given
mass of object
kinetic Energy
Tension in string
mass is moving in a horizontal circle so tension is providing the centripetal acceleration
therefore
where r=radius of circle
kinetic energy of particle
divide 1 and 2 we get
Answer:
A
Explanation:
Opposite attract. Since electrons are negative they will be attracted to the protons because they a positive
he weights 187.393 pounds