^MECHANICS
^MECHANICS
Entries by kp-web-admin
^Cu voltameter
Cu voltameter It consists of a glass vessel containing an aqueous solution of CuSO4 as electrolyte & two copper rods as electrodes. Copper sulphate in aqueous solution dissociated as . Due to the applied p.d. the SO2-4 ions drift towards the anode & the Cu2+ ions drift towards the cathode. The SO2-4 ions on reaching […]
*Kinematics
*Kinematics
^General
^General QUANTITY SYMBOL DEFINITION/RELATION SI UNITS DIMENSIONS Mass M or m Also called inertia. kg [M] Area A or S Region bounded by lines or curves in 2D. M2 [L2] Volume V Space bounded by lines or curves in 3d. m3 [L3] Density r Mass per unit volume kg m – 3 [ML – 3] […]
^Electrolysis
Electrolysis The process of dissociating a liquid into ions when electric current is passed through them is called electrolysis or conductors of second kind. The arrangement used to study electrolysis is called a Voltameter. It contains a vessel, two electrodes, a solution called electrolyte & dc power supply. Current inside electrolytes is due to motion […]
^Electrolytes
Electrolytes Liquids are categorized in to three types 1st type which don’t conduct e.g. Pure water or distilled water, vegetable oil. 2nd type which conduct but don’t dissociate into ions. e.g. Mercury. 3rd type which dissociate into ions & conduct when electric current is passed through them. Such liquids are called electrolytes.
*Physical quantities
*Physical quantities Quantity (symbol) Definition / Relation Type Mass (m) Quantity of matter contained in a substance Scalar Distance (D) Actual path length Scalar Speed (v) Distance covered per unit time spent Scalar Time (t) Reference to measure duration of an event. Scalar Electric current (I) Rate of flow of charge. Scalar Pressure (P) Normal […]
^Circuit to find ‘r’ of a cell
Circuit to find ‘r’ of a cell When the switch S is closed & the switch S1 is kept open, then the cell of emf ξ is said to be in open circuit. Let here the balancing length is b1, then ξ ∝ b1 Now when the switches S & S1 are closed, then the […]
^Circuit to compare emf of two cells
Circuit to compare emf of two cells When S & S1 closed let the balancing length is b1, ξ1 ∝ b1. When S & S2 closed let the balancing length is b2, ξ2 ∝ b2. Dividing above two relations we get
^At balanced state
At balanced state 1. current in the galvanometer arm Ig is zero and 2. current flowing in the mesh ABCD is 3. Potential drop across AB is V = IRp 4. Potential gradient K = V/L 5. As ξA is balanced against the potential drop of length AN, thus 6. ξA ∝ b is called […]
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