How to Determine Battery Terminals Using a Simple Circuit:
Suppose the ‘\(+\)’ and ‘\(–\)’ symbols cannot be read on a battery.
Suggest a method to identify the two terminals of this battery.
Suggest a method to identify the two terminals of this battery.
You can use an to identify the terminals. Connect the two wires of the LED to the battery. If the LED , the wire connected to the longer leg of the LED is the , and the other is the . If it does not glow, reverse the connections to find the correct terminals.