An ideal voltmeter V is connected to a 2.0-Ω resistor and a battery with emf 5.0 V and i...

An ideal voltmeter V is connected to a 2.0-Ω resistor and a battery with emf 5.0 V and internal resistance 0.5Ω as shown in Fig. E25.27. (a) What is the current in the 2.0-Ω resistor? (b) What is the terminal voltage of the battery? (c) What is the reading on the voltmeter? Explain your answers.