You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XIII

Physics

Series Combination of Cells

In a mixed gr...

Question

In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of $20 Ω$ . If the emf and internal resistance of each cell is 1.5 volt and $1 Ω$ respectively then the value of i is

0.14 A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.25 A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.75 A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.68 A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 0.68 A
No. of cells in a row n = 10; No. of such rows m = 5
$i = \frac{n E}{(R + \frac{n r}{m})} = \frac{10 \times 1.5}{(20 + \frac{10 \times 1}{5})} = \frac{15}{22} = 0.68$ amp

Suggest Corrections

Similar questions

^{'} n^{'}

cells, each of emf

^{'} e^{'}

and internal resistance

^{'} r^{'}

are joined in series to form a row.

^{'} m^{'}

such rows are connected in parallel to form a battery of

N = m n

cells. This battery is connected to an external resistance

^{'} R^{'}

Show that current

^{'} I^{'}

flowing through the external resistance

^{'} R^{'}

is given by:

I = \frac{N e}{m R + n r}

Q. 36 identical cell each having emf 1.5 volt and internal resistance

0.5 Ω

are connected in series with an external resistance of

12 Ω

.If 6 cells are wrongly connected then current through the circuit will be

Q. The

n

row each containing

m

cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of

3 Ω

resistance. If the total number of cells used are

24

and internal resistance of each cell is

0.5

Ω

, then

^{'} n^{'}

cells, each of emf

^{'} e^{'}

and internal resistance

^{'} r^{'}

are joined in series to form a row.

^{'} m^{'}

such rows are connected in parallel to form a battery of

N = m n

cells. This battery is connected to an external resistance

^{'} R^{'}

What is the emf of this battery and how much is its internal resistance?

Q. In a mixed grouping of

24

identical cells each of internal resistance

2 ohm

and

n

cells are connected in a row and likewise

m

number of rows are connected in parallel. To get the maximum power output across a load of

12 Ω

, the value of

n

and

m

are?

Join BYJU'S Learning Program

In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of 20Ω. If the emf and internal resistance of each cell is 1.5 volt and 1Ω respectively then the value of i is

The correct option is D 0.68 ANo. of cells in a row n = 10; No. of such rows m = 5 i=nE(R+nrm)=10×1.5(20+10×15)=1522=0.68 amp

In a mixed grouping of identical cells 5 rows are connected in parallel and each row contains 10 cells. This combination send a current i through an external resistance of $20 Ω$ . If the emf and internal resistance of each cell is 1.5 volt and $1 Ω$ respectively then the value of i is

The correct option is D 0.68 A
No. of cells in a row n = 10; No. of such rows m = 5
$i = \frac{n E}{(R + \frac{n r}{m})} = \frac{10 \times 1.5}{(20 + \frac{10 \times 1}{5})} = \frac{15}{22} = 0.68$ amp