LEDs are small electronic components that produce light when electricity flows through them. This video explains how LEDs work and why they are used in screens, lighting, and many everyday devices. A ...

Inductors are coils that store energy using magnetic fields when electricity flows through them. This video explains how inductors work and why they are used in power supplies, filters, and many ...

Add Yahoo as a preferred source to see more of our stories on Google. Gas prices that 'go up like a rocket, down like a feather' were a problem for Biden. Now they may haunt Trump.