a student made an electromagnet using an iron bolt, copper wire three times around the bolt and a battery how can he increase the strength of his magnent.
A. add batteries to decrease to voltage and increase the space between the coils of wire.
B. add batteries to decrease to voltage and decrease the space between the coils of wire
C. add batteries to increase the voltage, and increase the space between the coils of wire
D.add batteries to increase the voltage, and decrease the space between the coils of wire
D. Add batteries to increase the voltage, and decrease the space between the coils of wire
Increasing the voltage by adding batteries (in series for a higher voltage) will increase the current that flows through the wire, which in turn will increase the magnetic field created by the electromagnet. Furthermore, decreasing the space between the coils of wire means that there will be more coils in a given length of the bolt, which also increases the strength of the magnetic field produced. The combination of higher current and more coils wound tightly together is the most effective way to enhance the strength of the electromagnet given the options provided.