A student tests the electrical conduction of four materials.
- aluminium
- iron
- plastic
- silver
Which materials are good conductors of electricity?
aluminium, iron and silver
2 )
aluminium and silver only
3 )
iron, silver and plastic
4 )
plastic only
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!