Physics-
General
Easy
Question
In the figure shown, the potentiometer wire of length l = 100 cm and resistance 9
is joined to a cell of emf E1 = 10 V and internal resistance r1 = 1. Another cell of emf E2 = 5V and internal resistance r2 = 2 is connected as shown. The galvanometer G will show no deflection when the length AC is
- 50 cm
- 55.55 cm
- 52.67 cm
- 54.33 cm
The correct answer is: 55.55 cm
Related Questions to study
physics-
In the network shown, the current I is equal to 
A. Neglecting the internal resistance of the cell, the value of R is
In the network shown, the current I is equal to A. Neglecting the internal resistance of the cell, the value of R is
physics-General
physics-
The total current supplied to the circuit by the battery is
The total current supplied to the circuit by the battery is
physics-General
physics-
Two short bar magnets of equal dipole moments ‘M’ each are fastened perpendicular at their centers as shown in figure. The magnitude of the magnetic field at ‘P’ at a distance d from their common center as shown in figure is
Two short bar magnets of equal dipole moments ‘M’ each are fastened perpendicular at their centers as shown in figure. The magnitude of the magnetic field at ‘P’ at a distance d from their common center as shown in figure is
physics-General
physics-
A magnet of length 2L and moment ‘M’ is axially cut into two equal halves ‘P’ and ‘Q’. The piece ‘P’ is bent in the form of semi circle and ‘Q’ is attached to it as shown. Its moment is
A magnet of length 2L and moment ‘M’ is axially cut into two equal halves ‘P’ and ‘Q’. The piece ‘P’ is bent in the form of semi circle and ‘Q’ is attached to it as shown. Its moment is
physics-General
physics-
The variation of magnetic susceptibility 
with temperature for a diamagnetic substance is best represented by
The variation of magnetic susceptibility with temperature for a diamagnetic substance is best represented by
physics-General
physics-
A 3 volt battery with negligible internal resistance is connected in circuit as shown in the figure. The current I in the circuit will be.
A 3 volt battery with negligible internal resistance is connected in circuit as shown in the figure. The current I in the circuit will be.
physics-General
physics-
In the circuit dissipation is 150 W. Then R is
In the circuit dissipation is 150 W. Then R is
physics-General
physics-
A wire has a no uniform cross-section as shown. A steady current is flowing through it. Then the drift speed of the electrons
A wire has a no uniform cross-section as shown. A steady current is flowing through it. Then the drift speed of the electrons
physics-General
physics-
Find the potential difference between A and B
Find the potential difference between A and B
physics-General
physics-
Five resistances are connected as shown in figure. The effective resistance between the points A and B is
Five resistances are connected as shown in figure. The effective resistance between the points A and B is
physics-General
physics-
The effective resistance between the terminals P and Q in following circuit is
The effective resistance between the terminals P and Q in following circuit is
physics-General
physics-
Three bulbs B1, B2 and B3 are connected to the mains as shown in figure. How will the incandescence of the bulb B1 be affected, if one of the bulbs B2 or B3 is disconnected from the circuit?
Three bulbs B1, B2 and B3 are connected to the mains as shown in figure. How will the incandescence of the bulb B1 be affected, if one of the bulbs B2 or B3 is disconnected from the circuit?
physics-General
physics-
In a metre bridge, the gaps are closed by two resistances P and Q the balance point is obtained at 40 cm. When Q is shunted by a resistance of 10, the balance point shifts to 50 cm. The values of P and Q are
In a metre bridge, the gaps are closed by two resistances P and Q the balance point is obtained at 40 cm. When Q is shunted by a resistance of 10, the balance point shifts to 50 cm. The values of P and Q are
physics-General
physics-
The current in branch AB is
The current in branch AB is
physics-General
physics-
In the given circuit, each resistance is 10. The equivalent resistance between A and D is
In the given circuit, each resistance is 10. The equivalent resistance between A and D is
physics-General
