Question 657: Current Electricity

Question

A wire of resistance 12 ohms per meter is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the figure is

Accepted Answer

The resistance of length 2$$\pi $$R is 12$$\Omega $$. Hence the resistance of length $$\pi $$R is  6$$\Omega $$. Thus two resistances of 6$$\Omega $$ can be represented as shown in fig.
$$ 	herefore $$ Equivalent resistance R = $${{6 	imes 6} \over {12}} = 3$$

Answer

$$3\,\Omega $$

Answer

$$6\pi \,\Omega $$

Answer

$$6\,\Omega $$

Answer

$$0.6\pi \,\Omega $$

Current Electricity

A wire of resistance 12 ohms per meter is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the figure is

Choose the correct answer: