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Peter2
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Member advised to use the homework template for posts in the homework sections of PF.
Homework Statement
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Hi everyone, some school mates sugested id try this forum for help with this work i have :)
- will try to keep it short
We were trying to induce current in a coil and confirm the experimental results with math, but the math is way off and nobody is sure why...Experiment:
- Cooper Coil (3Ω) (measured with multimeter)
- Rectangle (6.5 cm x 3,5 cm) → Area ≈ 0.002275 m2
- Number of Turns 6
- Magnet Rectangle (4cm x 10cm x 5cm) (3050 Gauss) → 0.305 Tesla
- Δt of passing the magnet was around 1sec... but we had a hard time keeping this scientific and precise
- Digital Multimeter set to 2mA - Average of the readings turned out 0.0048
- 0.0048mA → 48x10-7 A
- I = V/A → V = 0.000014 Volts
Homework Equations
Now for the Theoric Rusults:
- Φ = B ⋅ A ⋅ cosθ → Φ= 0.305 ⋅ 0.002275 ⋅ cos0 = 0.000694
- ξ= - N ⋅ (dΦ/dt) → ξ = - 6 ⋅ 0.000694/1 = 0.004163 Volts
The Attempt at a Solution
Why there is such a big difference in our math vs our experience?
Are we doing something wrong?Thanks for any help ;) Cheers!
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