An ideal voltmeter V is connected to a 2.0-$\Omega$ resistor and a battery with emf 5.0 V and internal resistance 0.5$\Omega$ as shown in $\textbf{Fig. E25.27}$. (a) What is the current in the 2.0-$\Omega$ resistor? (b) What is the terminal voltage of the battery? (c) What is the reading on the voltmeter? Explain your answers.
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Step 1
• The battery has an emf E = 5.0 V with an internal resistance r = 0.5 Ω. • The external resistor has a resistance R = 2.0 Ω. • The ideal voltmeter is connected across the 2.0 Ω resistor and does not draw any current. Show more…
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