AIEEE 2003 | Current Electricity Question 322 | Physics

A $$3$$ volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current $${\rm I}$$, in the circuit will be AIEEE 2003 Physics - Current Electricity Question 322 English

AIEEE 2003 Physics - Current Electricity Question 322 English

$$1$$ $$A$$

$$1.5$$ $$A$$

$$2$$ $$A$$

$$1/3$$ $$A$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

The nagative $$Zn$$ pole of a Daniell cell, sending a constant current through a circuit, decreases in mass by $$0.13g$$ in $$30$$ minutes. If the electrochemical equivalent of $$Zn$$ and $$Cu$$ are $$32.5$$ and $$31.5$$ respectively, the increase in the mass of the positive $$Cu$$ pole in this time is

$$0.180$$ $$g$$

$$0.141$$ $$g$$

$$0.126$$ $$g$$

$$0.242$$ $$g$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

The thermo $$e.m.f.$$ of a thermo -couple is $$25$$ $$\mu V/{}^ \circ C$$ at room temperature. A galvanometer of $$40$$ $$ohm$$ resistance, capable of detecting current as low as $${10^{ - 5}}\,A,$$ is connected with the thermo couple. The smallest temperature difference that can be detected by this system is

$${16^0}C$$

$${12^0}C$$

$${8^0}C$$

$${20^0}C$$

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