help on equation please

[matt12321]

the current in a coil changes from 5amps to 2amps in 0.05s and induces a voltage of 30v in the coil, the inductance of the coil is

 

[stef]

Hi Matt,

If I remember right (learned that long ago) L = Vo * t / (I1-I2) and that is in Henry

 

[stef]

That would be 30V * 0.05s / (5A - 2A) = 0.5 H

 

[matt12321]

Hi Matt,

If I remember right (learned that long ago) L = Vo * t / (I1-I2) and that is in Henry

nice one. the actual answer is 0.5, but either way i transpose i cnt get the answer

 

[matt12321]

nice one. the actual answer is 0.5, but either way i transpose i cnt get the answer

ok cheers. i must have typed something wrong in

thanks for that