The potential difference across the terminals of the circuit can be calculated using Ohm's Law, which states that V = IR.
The potential difference across the terminals of a circuit can be found using Ohm's law. Ohm's law states that the potential difference (V) is equal to the current (I) multiplied by the resistance (R).
In this case, the resistance is given as 60 ohms, so the emf (V) can be calculated using the formula V = IR. As the current (I) is not given, it cannot be determined.