Question Answers

The potentiometer wire AB is 100 cm long. For what value of R, the galvanometer shows no deflection, when AC=40cm (shown in figure)? the galvanometer shows no deflection The potentiometer wire AB is 100 cm long. For what value of R when AC=40cm (shown in figure)? December 3, 2020 Category: Arihant Physics by D.C Pandey [...]

A potentiometer wire of length 100 cm has a resistance of 10 ohm. it is connected in series with a resistance and an accumulator of e.m.f 2 V and of negligible resistance . A source of e.m.f. 10 m V is balanced against a length of 40 cm of the potentiometer wire. What is the [...]

In the given circuit, the voltmeter and the electric cell are ideal. Find the reading of the voltmeter In the given circuit the voltmeter and the electric cell are ideal . Find the reading of the voltmeter December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 [...]

In the given circuit ammeter and voltmeters are out and circuit is completed the current through the cell is I0 and VA – VB = V0. Consider the symbols : x means _(A)_ is brought in the circuit, y means _(V)_ is brought in the circuit then: In the given circuit ammeter and voltmeters are [...]

When battery and galvanometer are interchanged in the case of Wheatstone bridge, then? then When battery and galvanometer are interchanged in the case of Wheatstone bridge December 3, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,

A voltmeter having a resistance of 1800 Ω is employed to measure the potential difference across 200Ω resistance, which is connected to dc power supply of 50 V and internal resistance 20Ω. What is the approximate percentage change in the potential difference across 200Ω resistance as a result of connecting the voltmeter across it? A [...]

A DC milliammeter has a resistance of 12Ω and gives a full scale deflection for a current of 0.01 A. To convert it into a voltmeter giving a full scale deflection of 3V, the resistance required to be put in series with the instrument is : A DC milliammeter has a resistance of 12Ω and [...]

The correct nomenclature for Fe4(Fe(CN)6)3 is (a) Ferroso-ferric cyanide (b) Ferric-ferrous hexacyanate The correct nomenclature for Fe4(Fe(CN)6)3 is (a) Ferroso-ferric cyanide (b) Ferric-ferrous hexacyanate December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

IUPAC name of K3(Al(C2O4)3) is called (a) Potassium alumino oxalato (b) Potassium aluminium (III) trioxalate IUPAC name of K3(Al(C2O4)3) is called (a) Potassium alumino oxalato (b) Potassium aluminium (III) trioxalate December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Effective atomic number of the central metal ion, Pt, in the complex (Pt(NH3)6) 4+ is ; (the atomic no, of Pt is 78) Effective atomic number of the central metal ion in the complex (Pt(NH3)6) 4+ is ; (the atomic no of Pt is 78) p)T. December 3, 2020 Category: Uncategorised (JEE Advanced Physics by [...]