In my class we did a science lab where we made a current conductor.. we took a wire and put a compass under it over itt and wrapped around it while it was connected to a cell...then there was a question that said what evidence suggests that current in a wire produces a magnetic effect around the wire?
2007-10-25 15:00:38 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
It's simple.
First start placing a permanent magnet near a compass, you can observe the compass needle showing a deflection.
Do this without using a permanent magnet but instead place connecting wire (without a battery) near a compass. Here you can observe no compass deflection. (No current on the wire , no magnetis field crreated.)
Do this again without using a permanent magnet but instead place currrent-carrying wire (with battery connection to both ends of the wire) near a compass. Positions of the wire also affect the strength of the magnetic field. The wire should be in perpendicular position to the compass. Explore it...
(A wire in closed circuit to a battery is done in a short time because it will be draining very fast the energy of the battery.)
The evidence is shown by the deflection of the compass needle that there is magnetic field when there is current on a wire.
In this proof you need: a compass, a battery,
a permanent magnet and a conducting wire.
2007-10-25 16:24:17 · answer #1 · answered by rene c 4 · 0⤊ 0⤋
If the compass pointed to the wire then it must have created a magnetic field.
Magnets can create electricity (ie generators)
Electricity can create magnetic fields (electric motors)
2007-10-25 15:08:04 · answer #2 · answered by big_g06354 2 · 0⤊ 0⤋
Did the compass needle maybe spin around ? , a good experiment , not sure of the right answer though l would like to know it when yuh find out , good luck , saranora dnear
2007-10-25 16:04:20 · answer #3 · answered by dnear34 2 · 0⤊ 0⤋