AIEEE 2004 | Current Electricity Question 335 | Physics

In a meter bridge experiment null point is obtained at $$20$$ $$cm$$, from one end of the wire when resistance $$X$$ is balanced against another resistance $$Y.$$ If $$X < Y$$, then where will be the new position of the null point from the same end, if one decides to balance a resistance of $$4$$ $$X$$ against $$Y$$

$$40$$ $$cm$$

$$80$$ $$cm$$

$$50$$ $$cm$$

$$70$$ $$cm$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

Thermistors are usually made of

metal oxides with high temperature coefficient of resistivity

metals with high temperature coefficient of resistivity

metals with low temperature coefficient of resistivity

semiconducting materials having low temperature

AIEEE 2004

MCQ (Single Correct Answer)

-1

The electrochemical equivalent of a metal is $${3.35109^{ - 7}}$$ $$kg$$ per Coulomb. The mass of the metal liberated at the cathode when a $$3A$$ current is passed for $$2$$ seconds will be

$$6.6 \times {10^{57}}/kg$$

$$9.9 \times {10^{ - 7}}\,kg$$

$$19.8 \times {10^{ - 7}}\,kg$$

$$1.1 \times {10^{ - 7}}\,kg$$

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