Home
Class 12
PHYSICS
Five cells each of internal resistance 0...

Five cells each of internal resistance `0.2 Omega` and e.m.f. 2V are connected in series with a resistance of `4 Omega`. The current through the external resistance is :

A

0.2 A

B

`0.5 A`

C

`1A`

D

`2A`.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Three similar cells, each of emf 2 V and internal resistance r Omega send the same current through an external resistance of 2 Omega when connected in series or in parallel. The strength of the current flowing through the external resistance is (A)

Two cells of 6 V and 4 V having internal resistance of 3 Omega and 2 Omega respectively are connected in parallel so as to send a current through an external resistance 8 Omega in the same direction. Find the current through the cells and the current through the external resistance.

A battery having emf 4 V and internal resistance 0.5 Omega is connected with a resistance of 4.5 Omega . The voltage at the terminals of the battery now is

(a) Six lead acid type of secondary cells each of 2.0 V and internal resistance 0.015 omega are joined in series to provide a supply resistance of 8.5 omega what are the current drawn from the supply and its terminal voltage (b) A secondary cell after long use has an e.m of 1.9 V and largic internal resistance of 380 omega what maximum current can be draw from the cell ? Could the cell drive the starting motor of a car ?

Six lead - acid type of secondary celJs each of emf 2.0V and internal resistance 0.015Omega are joined in series to provide supply to a resistance of 8.5Omega . What is the current drawn from the supply and its terminal voltage?

Two cells of emf 2V and 4V and internal resistance 1Omega and 2Omega respectively are connected in parallel so as to send the current in the same direction through an external resistance of 10Omega . Find the potential difference across 10Omega resistor.

7 cells each of emf epsilon and internal resistance r are to be connected in series. If due to oversight one cell is connected wrongly, the emf and internal resistance of the combination will be :

A potentiometer wire has a resistance of 20 Omega and length 10 m. It is connected in series with a battery of emf 2.5 V and negligible internal resistance, and an external resistance of 5 Omega . Fall of potential in mV per metre is