Electric Field Outside a Solenoid

AI Thread Summary
The discussion revolves around calculating the electric field outside a solenoid with specific parameters, including a radius of 1.85 cm and 1110 turns per meter, where the current varies over time as I = 2.50t. The relevant equation for the electric field is provided, incorporating constants and variables such as the permeability of free space and the distance from the solenoid's axis. Initially, the user calculated the electric field to be 1.09x10^{-4} V/m but later realized their calculation contained an error. The user ultimately found the mistake in their calculations. The thread highlights the importance of careful unit conversion and application of formulas in physics problems.
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Homework Statement



A solenoid has a radius of 1.85 cm and 1110 turns per meter. Over a certain time interval the current varies with time according to the expression I = 2.50t, where I is in amperes and t is in seconds. Calculate the electric field 5.47 cm from the axis of the solenoid.


Homework Equations



E = (μ_{0}n/2)(di/dt)(R^{2}/r), r>R

Where μ_{0} = 4∏x10^{-7}, n = 1110 turns/meter, di/dt = 2.50, R = 0.0185m, r=0.0547m

The Attempt at a Solution



After plugging in all the numbers and putting things in the right units, I got 1.09x10^{-4} V/m, but this is incorrect. If someone could tell me where I went wrong, I would really appreciate it! Thanks
 
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Nevermind, I found my mistake!
 
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