D. Gilley Coil + Gilley Coil Using the coil from part II, Connect the cell so th
ID: 2076411 • Letter: D
Question
D. Gilley Coil + Gilley Coil Using the coil from part II, Connect the cell so that the current in the coil is clockwise as viewed from the side opposite to the binding posts. Set this coil immediately adjacent to the coil connected to the galvanometer and with their axes in line. Is the induced current in the secondary coil in the same or opposite direction to that in the primary coil? Explain in terms of law. Gilley Coil + Gilley Coil + Metal Rod Set the two coils in the position shown in the previous section. Close the switch and note the deflection. Insert the soft-iron core and again close the switch and note the deflection. What does this indicate as to the effect of the presence of the iron core? Change the distance between the coils with the iron core still joining them. Close the switch and compare the reading with the one previously taken by use of the iron core. Does the distance between the coils materially affect the reading? Explain.Explanation / Answer
Q.2. The magnitude of deflection increases as we insert the iron core because inserting iron core will increase the magnitude of the magnetic field and hence the flux linked with the secondary coil. So magnitude of the induced current will increases.
Q.3. No it will changes the reading of the galvanometer because as the coils moves further apart the flux linked with them decreases and hence the induced current will also decreases. But as the iron core is inserted so this will increase the flux linked with the coils so overall the flux linked with the two coils remains same. So the reading of the galvanometer will not change.
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