The terminal potential difference of a battery, also known as its voltage, is the difference in electric potential between the positive and negative terminals of the battery. It is a measure of the battery's ability to do work, or provide electrical energy, to a circuit.
The terminal potential difference of a battery is measured using a voltmeter. The positive and negative leads of the voltmeter are connected to the corresponding terminals of the battery, and the voltage reading is displayed on the voltmeter's screen.
The terminal potential difference of a battery can be affected by factors such as the type of battery, its internal resistance, and its state of charge. Temperature can also have an impact on the terminal potential difference, as extreme temperatures can affect the chemical reactions within the battery.
No, the terminal potential difference of a battery is not constant. As a battery is used, its voltage will decrease over time. The rate of this decrease depends on the type of battery and its usage. Additionally, the terminal potential difference can also be affected by external factors such as temperature and the type of load connected to the battery.
The terminal potential difference and current flow in a circuit are directly related. According to Ohm's Law, the current flowing through a circuit is equal to the terminal potential difference of the battery divided by the resistance in the circuit. This means that as the terminal potential difference increases, the current flow will also increase, and vice versa.