Alternating current (a.c.) is an oscillation of electrons or 'back and forward' movement. One full cycle of alternating current is shown in the diagram below: ...

If the current flows in only one direction it is called direct current, or d.c. Batteries and solar cells supply d.c. electricity. A typical cell or battery may supply 1.5 V. The diagram shows an ...

This article will help CBSE Class 12 Science students. We have given NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current here. At Jagran Josh, these solutions are prepared by the ...