^Short circuiting a cell
Short circuiting a cell If resistance of the wire AB = R is zero & the switch S is closed, […]
Entries by kp-web-admin
^Simple circuit
Simple circuit 1. Current delivered by cell: 2. Power dissipated by a load is PR = I2R 3. Power dissipated […]
^Kirchoff’s laws
Kirchoff’s laws 1st or junction rule: ΣI = 0 at any isolated junction to conserve current. 2nd or mesh rule: […]
^Selection of cells
Selection of cells Leclanche cell for intermittent supply of current. Daniel cell for constant EMF source. Lead accumulator for strong […]
^Secondary cells
Secondary cells Secondary cells or accumulators are those which can be recharged. e.g. lead accumulator & alkali cell. Due to […]
^Primary cells
Primary cells Primary cells are those which can’t be recharged. e.g. Simple voltaic cell (ξ = 1.08 V), Daniel cell […]
^Standard cell
Standard cell A cell is said to be Standard if its EMF is precisely defined. e.g. Weston – Cadmium cell […]
^Internal resistance
Internal resistance Is the obstruction to the free motion of positive & negative ions of the electrolyte by the viscosity […]
^Significant figures
^Significant figures All accurately known digits plus the first uncertain digit of a measurement is called significant digits or significant […]
^EMf of a cell
EMf of a cell It is defined as the work done by the cell force in moving a unit positive […]
