Question 340: Current Electricity

Question

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 V
0
is almost zero, identify the correct statement :
![](https://imagex.cdn.examgoal.net/3rsa0w2w9jx3ochwe/744b0ade-0b0b-4b31-84e0-85da054dcd29/bec3ebe0-92ce-11e9-86c1-73f7f991b766/file-3rsa0w2w9jx3ochwf.png)

Accepted Answer

V = E Ã¢ÂÂ Ir
When V = V
0
= 0 $ \Rightarrow $ 0 = E Ã¢ÂÂ Ir
$ 	herefore $ E = r
When I = 0, V = E = 1.5 V
$ 	herefore $ r = 1.5 $\Omega $

Answer

The value of the resistance R is 1.5 $\Omega $

Answer

The emf of the battery is l.5 V and its internal resistance is 1.5 $\Omega $

Answer

The emf of the battery is l.5 V and the value of R is 1.5 $\Omega $

Answer

The potential difference across the battery is 1.5 V when it sends a current of 1000 mA

Current Electricity

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 V 0 is almost zero, identify the correct statement :

Choose the correct answer: