An electromagnet is created using a battery, an insulated copper wire and an iron nail. the wire is wrapped around the nail 20 times and attached to the battery. which pair of changes will definitely increase the strength of the electromagnet?
a) increase the voltage of the battery and decrease the number of turns of the coil.
b) decrease the voltage of the battery and decrease the number of turns of the coil.
c) increase the voltage of the battery and increase the number of turns of the coil.
d) decrease the voltage of the battery and increase the number of turns of the coil.
Answers: 3
Physics, 22.06.2019 11:30
Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?
Answers: 2
Physics, 22.06.2019 12:00
Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
Answers: 1
Physics, 22.06.2019 13:40
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 22.06.2019 17:30
Current from a charged capacitor lights a bulb. as time goes on the brightness of the
Answers: 3
An electromagnet is created using a battery, an insulated copper wire and an iron nail. the wire is...
Mathematics, 14.12.2020 18:30
English, 14.12.2020 18:30
Health, 14.12.2020 18:30
Mathematics, 14.12.2020 18:30
Biology, 14.12.2020 18:30
Chemistry, 14.12.2020 18:30
Geography, 14.12.2020 18:30
English, 14.12.2020 18:30
Mathematics, 14.12.2020 18:30
History, 14.12.2020 18:30
Geography, 14.12.2020 18:30