Guide

1
Unlikebarmagnets,
electromagnetscanchangethe
strengthoftheirmagneticforce.
Therearetwowaystochangeit,
asshownbelowinand.
Howcanthestrengthbechanged?
1 2
Inthecaseofchangingthenumberofturnsonthecoil,
whichonehasthestrongermagneticfield?
2
Your
answer
Your
answer
①Onebattery ②Twobatteries
①100turns ②200turns
100-turn
coil
100-turn
coil
Inthecaseofchangingthenumberofthebatteries,which
setuphasthestrongermagneticfield?
100-turn
coil
200-turn
coil
Maketheelectromagnetstronger!
7
Check the strength of an electromagnet