Power is V x I, voltage times current.
Ohm's law is I=V/R
If the load is too small and for example a battery has a small internal resistance (ie not too much drop across its terminals) the current flow can be huge.
When experimenting with circuits powered even by a 1.2V battery a fuse such always be in series with the battery for safety.
For many reasons metallic (electrical conductive) jewelry should not be worn. A short circuit can result in excessive temperature rise.
No comments:
Post a Comment