Question 267: 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 V0 is almost zero, identify the correct statement :

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 V0 is almost zero, identify the correct statement :

Choose the correct answer: