The potentiometer circuit shown is used to find the internal resistance of the cell E At balance, the galvanometer pointer does not deflect, and NO current flows through

a) the potentiometer wire PQ
b) the resistor R
c) the galvanometer G

In the above circuit, C denotes the balance position on the potentiometer wire AB Which of the following procedures can shift C towards the end B?

a) replacing the driving cell X by one with a smaller EMF
b) adding a resistance in series with the galvanometer G
c) increasing the resistance of the rheostat R

In the circuit shown in fig., the potential difference between the points C and D is balanced against 40 cm length of potentiometer wire of total length 100 cm in order to balance the potential difference between the points D and E The jockey to be pressed on potentiometer wire at a distance of

Cations absorb 6.02310²² electrons for the reduction How many equivalents of the ion reduced

Three bulbs with their power and working voltage are connected as shown in the circuit diagram to a 12 V battery The total power consumed by the bulbs is (ignore the internal resistance of the battery shown)

In the following circuit, 5 resistor develops 45 J/s due to current flowing through it the resistor is  power developed across 12

Electrolysis is the process in which electrical energy is converted to chemical energy in electrolytic cell, oxidation takes place at anode and reduction at cathode Electrode process depends on the electrode taken for electrolysis Amount of substance liberated at an electrode is directly proportional to the amount of charge passed through it the mass of substance liberated at electrode is calculated using the following relation:

Here, E represents the equivalent mass and 96500 C 'is called the Faraday constant Faraday (96500 C) is the charge of I mole electron, i.e., 6.023 10²³ electrons; it is used to liberate one gram equivalent of the substance.
The passage of current liberates H₂ at cathode and Cl₂ at and e The solution is:

For a cell, the graph between the P.D (V) across the terminals of the cell and the current I drawn from the cell is shown in the fig the emf and the internal resistance of the cell is E and r respectively

A current of 0.10 A flows through the 25W resistor represented in the diagram to the right The current through the 80W resistor IS:

What will be the maximum spin multiplicity for 4d orbital?

he activation energies of two reactions are  andIf the
temperature of the reacting systems is increased from T₁ to T₂ predict which of the following alternatives is correct? where, k; and k; are rate constants at higher temperature

The angle between the line 2x + y + 1 =0 and x + ky + 5 = 0 is 90° then k = _______

For such questions, we should know the properties of perpendicular lines. We should know how to find the slopes too.

The angle between the line x + y = 1 and x – y = 2 is

The angle between 2x + 3y – 7 = 0 and x + y – 8 = 0 is

The angle between ax + by + c = 0 and (a + b) x – (a – b) y = 0 is

If a line perpendicular to 2x - 3y + 7 = 0 forms a triangle with the coordinate axes whose area is 3 sq. units, then the equation of the line (s) is