Three statements about a.c. and d.c. currents are given.
1) A d.c. current is in one direction only whilst an a.c. current repeatedly changes direction.
2) d.c. is the abbreviation for direct current and a.c. is the abbreviation for amplitude current.
3) An a.c. current is in one direction only whilst a d.c. current repeatedly changes direction.
Which statements are correct?
1 )
1 and 2
1 only
3 )
2 and 3
4 )
3 only
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...