AIEEE 2006 | Current Electricity Question 301 | Physics

In a Wheatstone's bridge, three resistance $$P, Q$$ and $$R$$ connected in the three arms and the fourth arm is formed by two resistances $${S_1}$$ and $${S_2}$$ connected in parallel. The condition for the bridge to be balanced will be

$${P \over Q} = {{2R} \over {{S_1} + {S_2}}}$$

$${P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {{S_1}{S_2}}}$$

$${P \over Q} = {{R\left( {{S_1} + {S_2}} \right)} \over {2{S_1}{S_2}}}$$

$${P \over Q} = {R \over {{S_1} + {S_2}}}$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

The resistance of bulb filmanet is $$100\Omega $$ at a temperature of $${100^ \circ }C.$$ If its temperature coefficient of resistance be $$0.005$$ per $$^ \circ C$$, its resistance will become $$200\,\Omega $$ at a temperature of

$${300^ \circ }C$$

$${400^ \circ }C$$

$${500^ \circ }C$$

$${200^ \circ }C$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

The current $${\rm I}$$ drawn from the $$5$$ volt source will be AIEEE 2006 Physics - Current Electricity Question 291 English

$$0.33$$ $$A$$

$$0.5$$ $$A$$

$$0.67$$ $$A$$

$$0.17$$ $$A$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

Two sources of equal $$emf$$ are connected to an external resistance $$R.$$ The internal resistance of the two sources are $${R_1}$$ and $${R_2}\left( {{R_1} > {R_1}} \right).$$ If the potential difference across the source having internal resistance $${R_2}$$ is zero, then

$$R = {R_2} - {R_1}$$

$$R = {R_2} \times \left( {{R_1} + {R_2}} \right)/\left( {{R_2} - {R_1}} \right)$$

$$R = {R_1}{R_2}/\left( {{R_2} - {R_1}} \right)$$

$$R = {R_1}{R_2}/\left( {{R_1} - {R_2}} \right)$$

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