Physics
The emf of a cell depends on :
- the material of electrodes
- the shape of electrodes
- the distance between the electrodes
- the amount of electrolyte in the cell
Related Questions
The specific resistance of copper, silver and constantan are 1.78 x 10-6 Ω cm, 10-6 Ω cm and 48 x 10-6 Ω cm respectively.
(i) Identify the best conductor.
(ii) Give reason for your answer above.
The current flowing through a conductor is 2 A at 50 V and 3 A at 60 V. Identify whether the conductor is ohmic or not.
Emf of a cell is …………… the terminal voltage when cell is not in use, while …………… the terminal voltage when cell is in use.
- greater than, smaller than
- smaller than, greater than
- equal to, greater than
- equal to, smaller than