Question 677: Current Electricity

Question

A 6 volt battery is connected to the terminals of a three metre long wire of uniform thickness  and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50 cm will be

Accepted Answer

$$R\,\alpha \,\ell $$
For 300 cm, R = 100 $$\Omega $$
For 50 cm, $$R' = {{100} \over {300}} 	imes 50 = {{50} \over 3}\Omega $$
$$ 	herefore $$  IR = 6
$$ \Rightarrow IR' = {6 \over R} 	imes R' = {6 \over {100}} 	imes {{50} \over 3} = 1\,volt.$$

Answer

2 volt

Answer

3 volt

Answer

1 volt

Answer

1.5 volt

Current Electricity

A 6 volt battery is connected to the terminals of a three metre long wire of uniform thickness and resistance of 100 ohm. The difference of potential between two points on the wire separated by a distance of 50 cm will be

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