Answer
All three of these statements are true.
(a) A battery supplies the energy to a circuit by converting chemical energy into electrical energy. When a circuit is connected to a battery, the battery drives the flow of current through the circuit by providing a potential difference (voltage) across its terminals.
(b) A battery is a source of potential difference, and the potential difference between its terminals is always the same as long as the battery is not depleted. The potential difference across the terminals of a battery is determined by the chemical reactions taking place within the battery, and is not affected by the load on the battery or the current flowing through the circuit.
(c) A battery is a source of current, and the current leaving the battery is always the same as long as the battery is not depleted. The current supplied by the battery is determined by the potential difference across the terminals of the battery and the resistance of the circuit. If the resistance of the circuit is increased, the current flowing through the circuit will decrease, but the current leaving the battery will remain the same.
Work Step by Step
All three of these statements are true.
(a) A battery supplies the energy to a circuit by converting chemical energy into electrical energy. When a circuit is connected to a battery, the battery drives the flow of current through the circuit by providing a potential difference (voltage) across its terminals.
(b) A battery is a source of potential difference, and the potential difference between its terminals is always the same as long as the battery is not depleted. The potential difference across the terminals of a battery is determined by the chemical reactions taking place within the battery, and is not affected by the load on the battery or the current flowing through the circuit.
(c) A battery is a source of current, and the current leaving the battery is always the same as long as the battery is not depleted. The current supplied by the battery is determined by the potential difference across the terminals of the battery and the resistance of the circuit. If the resistance of the circuit is increased, the current flowing through the circuit will decrease, but the current leaving the battery will remain the same.
