An ideal voltmeter V is connected to a 1.5 Ω resistor and a battery with emf 4.7 V and internal resistance 0.5 Ω as shown in the figure. What is the reading on the voltmeter? (Give your answer in decimal using V as unit)
Solution)
Here,
Voltmeter is ideal, so current=0
Terminal Voltage, Vt= E- IR
Vt=4.7 V-0 =4.7 V
Now,
Voltage drop across 1.5 ohm resistor,
V= IR=0
Now, voltmeter reading,
V= 4.7V-0 =4.7 V (Ans)
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An ideal voltmeter V is connected to a 1.5 Ω resistor and a battery with emf...
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