0Define Electric Potential difference.
Ans: Amount of work done by every unit positive charge to move from one point to other point is known as electric potential difference.
Difference between D.C current and A.C current.
Ans:
1. The Current whose magnitude remains constant with respect to time known as dc current whereas the current whose magnitude changes with respect to time and. changes its direction after every half cycle is known as ac current.
2. The No oscilations per sec is fruency of ac which is 50 hz but dc has no cycle hence its frequency is zero.
