Hey everyone,
I'm just starting out doing electronics as a hobby in these troubled times and I'm having trouble understanding voltage:
I have a book on electronics "Electronics for dummies" and it says:
"Voltage can be considered positive or negative , but only when compared with some reference point. For example, the voltage at the positive terminal of a flashlight battery is +1.5V relative to the negative terminal. The voltage at the negative terminal is -1.5V relative to the positive terminal."
So if I have a 9V battery does that mean positive terminal is +9v and the negative terminal is -9V making the total voltage 18V?
Or is the negative terminal 0V and the positive is +9V making the total voltage 9V?
I'm just starting out doing electronics as a hobby in these troubled times and I'm having trouble understanding voltage:
I have a book on electronics "Electronics for dummies" and it says:
"Voltage can be considered positive or negative , but only when compared with some reference point. For example, the voltage at the positive terminal of a flashlight battery is +1.5V relative to the negative terminal. The voltage at the negative terminal is -1.5V relative to the positive terminal."
So if I have a 9V battery does that mean positive terminal is +9v and the negative terminal is -9V making the total voltage 18V?
Or is the negative terminal 0V and the positive is +9V making the total voltage 9V?