Physics
General
Easy
Question
If the deflection of the galvanometer is the same direction at both the ends of the potential meter wire, then point out the statement which is definitely not the possible reason for the.
- current flows is the same direction in both cases through the galvanometer
- Connecting wire in the galvanometer circuit is broken.
- The positive terminals of all the cells are not connected at one point.
- The potential difference between the ends of the wire is less than the emf of the cell which is to be measured.
The correct answer is: Connecting wire in the galvanometer circuit is broken.
Related Questions to study
Physics
In the experiment of potentiometer wire AB is 100 cm long shown in figure When AC=40 cm , no deflection oocurs in the galvanometer. What is the value of R ?
In the experiment of potentiometer wire AB is 100 cm long shown in figure When AC=40 cm , no deflection oocurs in the galvanometer. What is the value of R ?
PhysicsGeneral
maths-
The area bounded between the parabola y2 = 4x and the line y = 2x – 4 is equal to
The area bounded between the parabola y2 = 4x and the line y = 2x – 4 is equal to
maths-General
physics
Consider the potentiometer circuit shown. The potentiometer wire is 600 cm long and having restance 15r At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer?
Consider the potentiometer circuit shown. The potentiometer wire is 600 cm long and having restance 15r At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer?
physicsGeneral
physics-
The strain-stress curves of three wires of different materials are shown in the figure. 
and
are the elastic limits of the wires. The figure shows that
The strain-stress curves of three wires of different materials are shown in the figure. and are the elastic limits of the wires. The figure shows that
physics-General
chemistry-
Which of the following equations corresponds to theenthalpyofcombustionat298K:-
Which of the following equations corresponds to theenthalpyofcombustionat298K:-
chemistry-General
chemistry-
IfC6H12O6(s)+9O2(g)→6CO2(g)+6H2O(g); ΔH=–680Kcal The weight of CO2(g) produced when170Kcal of heat is evolved in the combustion
IfC6H12O6(s)+9O2(g)→6CO2(g)+6H2O(g); ΔH=–680Kcal The weight of CO2(g) produced when170Kcal of heat is evolved in the combustion
chemistry-General
chemistry-
TheenthalpyofformationforC2H4(g),CO2(g) and H2O(
) at 25°C and 1atm. pressure are 52,–394 and –286KJmol–1 respectively. The enthalpy of combustion of C2H4 will be-
TheenthalpyofformationforC2H4(g),CO2(g) and H2O() at 25°C and 1atm. pressure are 52,–394 and –286KJmol–1 respectively. The enthalpy of combustion of C2H4 will be-
chemistry-General
chemistry-
Accordingtoequation, CH()+15/2O(g)→6CO(g)+3HO() ΔH= –3264.4KJ mol the energy evolved when7.8g benzene is burn tin air will be-
Accordingtoequation, CH()+15/2O(g)→6CO(g)+3HO() ΔH= –3264.4KJ mol the energy evolved when7.8g benzene is burn tin air will be-
chemistry-General
chemistry-
M is a metal that forms an oxide 
When a sample of metal M reacts with one mole of oxygen what will be the ΔH in that case-
M is a metal that forms an oxide When a sample of metal M reacts with one mole of oxygen what will be the ΔH in that case-
chemistry-General
physics
Circuit for the measurement of resistance by potentiometer is shown. The galvanometer is first connected at point-A and zero-deflection is observed at length PJ=10 cm. In the second case, it is connected at a point C and zero deflection is observed at a length 30 cm from . Then what is the unknown resistance X?
Circuit for the measurement of resistance by potentiometer is shown. The galvanometer is first connected at point-A and zero-deflection is observed at length PJ=10 cm. In the second case, it is connected at a point C and zero deflection is observed at a length 30 cm from . Then what is the unknown resistance X?
physicsGeneral
physics
A potentiometer is preferred over a voltmeter to measure the emf of a cell because....
A potentiometer is preferred over a voltmeter to measure the emf of a cell because....
physicsGeneral
physics
A 10 m wire potentiometer is connected to an accumulator of steady voltage. A 7.8 m length of it balances the emf of a cell on 'open-circuit'. When cell delivers current through a conductor of resistance 
Ω it is balanced against 7.0 cm of the same poleutomelic. What is the internal resistance of the cell?
A 10 m wire potentiometer is connected to an accumulator of steady voltage. A 7.8 m length of it balances the emf of a cell on 'open-circuit'. When cell delivers current through a conductor of resistance Ω it is balanced against 7.0 cm of the same poleutomelic. What is the internal resistance of the cell?
physicsGeneral
chemistry-
The structure of the following polymer is :
The structure of the following polymer is :
chemistry-General
physics
The reciprocal of resistivity is called…….
The reciprocal of resistivity is called…….
physicsGeneral
physics
If a copper wire is stretched to make it n=0.1% longer, then what is the percentage change in its resistance?
If a copper wire is stretched to make it n=0.1% longer, then what is the percentage change in its resistance?
physicsGeneral
