Question

A cell has a voltage of 1.2 V. Seven of these cells are connected in series, and 4 such sets of series connected cells are further connected in parallel. The voltage of this battery is _________ V

Answer 1

8.4v is the correct answer

Answer 2

Hey dear,

◆ Answer-
V" = 2.1 V

◆ Explanation-
# Given-
V = 1.2 V

# Solution-
For batteries connected in series -
V' = V1 + V2 .....
For 7 batteries,
V' = 7V

For cells connected in parallel-
1/V" = 1/V1' + 1/V2' + ....
For 4 such cells
V" = V'/4
V" = 7V/4

Substituting values -
V" = 7 × 1.2 / 4
V" = 2.1 V

Therefore, voltage of resultant combination is 2.1 V.

Hope this helps...