AIEEE 2006 | Current Electricity Question 348 | Physics

A thermocouple is made from two metals, Antimony and Bismuth. If one junction of the couple is kept hot and the other is kept cold, then, an electric current will

flow from Antimony to Bismuth at the hot junction

flow from Bismuth to Antimony at the cold junction

now flow through the thermocouple

flow from Antimony to Bismuth at the cold junction

AIEEE 2006

MCQ (Single Correct Answer)

-1

An electric bulb is rated $$220$$ volt - $$100$$ watt. The power consumed by it when operated on $$110$$ volt will be

$$75$$ watt

$$40$$ watt

$$25$$ Watt

$$50$$ Watt

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 338 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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