Recent content by Son-of-Shem

yeah, it is constant... I was trying to find voltage drop, which is -dΦ/dt and dΦ=B(dot)dA so Φ=∫B(dot)dA so d/dt(∫B(dot)dA)=dΦ/dt then V=-d/dt(∫B(dot)dA) (for a 1 turn coil) or V=-d/dt(N∫B(dot)dA) (for coil w/ N turns) and since area doesn't change with time... then...

sorry, I'll start over from the beginning. I send a cart with a magnet down a ramp, and through a coil of wire with 200 turns, sitting perpendicular to the tabletop, and measure the maximum voltage drop. The formula I found (using magnetic flux) is V=-N∫dx/dt * dB/dx(dot)dA so A is the...

thanks, yeah... I should have mentiond that, shouldn't I... oops. A is the area. I just wasn't sure since v depended on x, and there was a dx in there, if it was ok to pull that out...

so I'm working on a physics lab report, and I've derived the following formula V=-N∫dB/dt(dot)dA then I used the chain rule to turn it into V=-N∫dx/dt * dB/dx(dot)dA my question is, can I pull the dx/dt out of integral? I was doing the experiment, and measured the voltage drop, and...