Induced Current: Faraday\'s Law What can be concluded from the experiment result
ID: 1454197 • Letter: I
Question
Induced Current: Faraday's Law
What can be concluded from the experiment results below?
What we did was connect the galvanometer to the secondary coil (larger diameter coil), then took a bar magnet and moved the N-pole and S-pole ends in and out at different speeds while noting the deflection in the galvanometer. Then we repeated the process with a weaker magnet. What do the results of this experiment conclude?
Next, the primary coil was connected to an energy source through a switch, and the primary coil inserted into the secondary coil. While opening the swtich, we moved the primary coil in and out of the secondary coil and observed the deflection and direction of the galvanometer. Then, while closing the switch, we repeated the process. Finally, we inserted a bar of iron into the primary coil, then moved the primary coil in and out of the secondary coil, first while opening the switch, then while closing the switch. What can you conclude from the results of the experiment?
Magnet A Motion Maximum Deflection Direction (of galvanometer needle) N-pole moving into the coil 30mA negative (left) moving into positive end of coil N-pole moving out of the coil 30mA positive (right) moving out of positive end of coil S-pole moving into the coil 30mA positive (right) moving into positive end of coil S-pole moving out of the coil 30mA negative (left) moving out of positive end of coilExplanation / Answer
by bringing nearer and taking back from the coil,the field lines passing through coil will changes and thereby the flux through the coil will changes which induces a current in the coil
the direction of this induced current is such that it opposses the change influx through the coil
if we kept the iron magnet ,more number of filed lines passes through the coil hence more current is induced