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Stage 1
Answer 4 questions correctly in a row.

A doorbell uses a solenoid to strike a bell when the button is pressed. The solenoid has a length of 41 millimeters and contains 2,785 turns. When the doorbell button is pressed, 0.54 amps of current flow through the solenoid. What is the strength of the magnetic field inside the solenoid?

Use

µ₀

–

m/A

for the permeability of free space.

Write your answer in scientific notation, rounded to one decimal place.