The smallest temperature difference that can be measured with a combination of a thermocouple of thermo e.m.f. `30mu V` per degree and a galvanometer of 50 ohm resistance, capable of measuring a minimum current of `3xx10^(-7)` amp is

The smallest temperature difference measured with a thermocouple of e.m.f. 30 muVC^-1 and a galvanometer of 50 Omega and capable of measuring a minimum current of 3 xx 10^-7 A is

Near room t emperature, the thermo emf of a copper constantan couple is 40 muV per degree. What is the smallest temperature difference that can be detected with a single such couple and a galvanometer of 100 ohm resistance capable of detecting current as low 10^(-6) ampere?

Near room t emperature, the thermo emf of a copper constantan couple is 40 muV per degree. What is the smallest temperature difference that can be detected with a single such couple and a galvanometer of 100 ohm resistance capable of detecting current as low 10^(-6) ampere?

Near room t emperature, the thermo emf of a copper constantan couple is 40 muV per degree. What is the smallest temperature difference that can be detected with a single such couple and a galvanometer of 100 ohm resistance capable of detecting current as low 10^(-6) ampere?

How can a voltmeter of resistance 200 ohm and measuring 10 V be used to measure a current of 5 A?

Hwo can a voltmeter of resistance 200 ohm and measuring 10 V be used tomeasure a current of 5A ?

Near room temperature , the thermo emf of a thermo couple is 40 muV per degree. A galvanometer of 25 Omega and capable of detecting current of the order of 4 mu A is used. Calcualate the smallest temperature difference that can be detected with this galvanometer.

The thermo e.m.f. of a thermo- couple is 25 muV//^@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

A copper constantan thermocouple produces an emf of 40 microvolt per degree celsius in the linear range of temperature. A galvanometer of resistance 10 ohm and capable of detecting a current of one microampere is employed. What is the smallest temperature that can be detected by this arrangement?

An electric wire is connected across a cell of e.m.f. E . The current I is measured by an ammeter of resistance R. According to ohm's law