A student is trying to make a small speaker. She fixes a small electromagnet close to a shin springy steel sheet and then connects a battery and switch to the electromagnet.
a. describe what happens to the steel sheet when the switch is closed
b. when the switch is opened again what happens to the steel sheet?
c. if the student has connected the battery the other way round, what difference would this have made to your answer on part a ?
a. describe what happens to the steel sheet when the switch is closed
b. when the switch is opened again what happens to the steel sheet?
c. if the student has connected the battery the other way round, what difference would this have made to your answer on part a ?
b. the rest of the electromagnet is still there
c. will not be a magnetic field
*maaf jika salah ;)