# Real-life Electricity

Electricity and Magnetism Level 5

We have a solenoid with 500 turns, 10$$\text { cm}$$ length, what is the magnitude of the magnetic field(calculated in SI units) at one end of the solenoid when it is supplied by 5 ampere current?

Details and assumptions:

• $$\mu=4\pi × 10^-7$$.

• Radius of the solenoid is $$R=0.035 \text{ m}$$.

• Neglect the Earth magnetic field.

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