Q1 Internal resistance depends on
- Nature of electrolyte
- Nature of electrodes
- Both a and b
- None of these
- Both a and b
Q2 To draw maximum current from a combination of cells how should the cells be grouped
- Series
- Parallel
- Mixed
- Depend upon the relative value of external and internal resistance.
- Depend upon the relative value of external and internal resistance.
Q3 Two cells of emf 1.25 V and 0.75 V and internal resistance of 2 Ω and 1 Ω respectively are connected in series ,Find the effective E.M.F?
- 2 V
- 3 V
- 5 V
- 0 V
- 3 V
Q4 Series combination of n cells is used when high ------------ is required.
- voltage
- current
- both of these
- none of these
- voltage
Q5 Two cells of e.m.f E1 and E2 and internal resistance r1 and r2 are connected in series. Then the e.m.f. is ?
- E = E1 + E2
- E = E1 / E2
- E = E1. E2
- None of the above
- E = E1 + E2
Q6 In parallel grouping of cells, we obtain more current.
- True
- false
- True
Q7 When cells are connected incorrectly in series, total internal resistance is also affected.
- True
- false
- false
Q8 Cells can be grouped in __________ different way .
- 1
- 3
- 5
- 7
- 3
Q9. n cells each of emf are connected in series combination .The effective emf of series combination.
- E
- E/n
- E+n
- nE
- nE
Q10 n cells each of emf are connected in parallel combination. The effective emf of parallel combination
- E
- E/n
- E+n
- nE
- E
