Verified Solution • 2025–26 Session
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QJEEM19Ph8a01: JEE Main 2019 Physics - Class 12 JEEM19Ph8a01 Solution: To verify Ohm's law, a student connects the voltmeter across…
To verify Ohm's law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained : 
If V0 is almost zero, identify the correct statement :
If V0 is almost zero, identify the correct statement :
Multiple Choice Options
- A The value of the resistance R is 1.5
- B The emf of the battery is l.5 V and its internal resistance is 1.5
- C The emf of the battery is l.5 V and the value of R is 1.5
- D The potential difference across the battery is 1.5 V when it sends a current of 1000 mA
Step-by-Step Verified Solution
V = E – Ir
When V = V0 = 0 0 = E – Ir
E = r
When I = 0, V = E = 1.5 V
r = 1.5
When V = V0 = 0 0 = E – Ir
E = r
When I = 0, V = E = 1.5 V
r = 1.5