A set of n equal resistors , of va...

A set of n equal resistors , of value R each , are connected in series to a battery of emf E and internal resistance R . The current drawn is I. Now the n resistors are connected in parallel to the same battery . Then the current drawn from battery becomes 10 I . the value of n is

`20`

`11`

`10`

`9`

Text Solution

Verified by Experts

Topper's Solved these Questions

QUESTION PAPERS OF JEE MAIN -2018
CHHAYA PUBLICATION|Exercise QUESTION|24 Videos
QUESTION PAPERS OF WBCHSE -2017
CHHAYA PUBLICATION|Exercise SECTION-II ( GROUP D )|14 Videos

Similar Questions

Explore conceptually related problems

Show that the rate of heat produced for ,any battery of emf E and internal resistance R will maximum for R = r

Three resistors of equal resistances when connected in series across a voltage souce , dissipate 100 watt of power. What would be the power dissipated . If the resistors are connected in parallel across the same source of emf?

A battery of emf E and internal resistance 'r' is connected to an external resistance 'R', the condition for maximum power transfer is

Five equal resistances , each of resistance R , are connected as shown in figure below.A battery of V volt is connected between A and B . The current flowing in FC will be.

A parallel combination of three resistances of 6 Omega, 12 Omega and 12 Omega is connected in series with an electric cell of emf 1.5 V and internal resistance 2 Omega . Find out the currents through the three resistances.

Equivalent resistance are 12Omega and 2.25Omega when two resistors are connected in series and parallel. Calculate the value of resistors.

n electric cells of emf e and internal resistance r each are connected in series.What is the emf of this combination.

Four cells, each of emf E and internal resistance r , are connected in series across an external resistance R By mistake one of the cells is connected in reverse. Then the current in the external circuit is

CHHAYA PUBLICATION-QUESTION PAPERS OF NEET -2018-QUESTION

The efficiency of an ideal heat engine working between the free...
Text Solution
|
A carbon resistor of ( 47 +- 4.7 ) K Omega is to be marked wi...
Text Solution
|
A set of n equal resistors , of value R each , are connected ...
Text Solution
|
A battery consists of a variable number n of identical cells (...
Text Solution
|
Unpolarised is incident from air on a plane surface of a mate...
Text Solution
|
In young's double experiment the separation d between the slits ...
Text Solution
|
An astronomical refreacting telescope will have large angular ...
Text Solution
|
The ratio of kinetic energy to the total energy of an electron...
Text Solution
|
An electron of mass m with an initial velocity vecV = v(0) ha...
Text Solution
|
For a radioactive material , half - life is 10 minutes . If in...
Text Solution
|
When the light of frequency 2 V(0) ( where V(0) is threshold ...
Text Solution
|
In a p-n junction diode , change in temperature due to heating
Text Solution
|
In the combination of the following gates the output Y can be ...
Text Solution
|
An EM wave is propagating in a medium with a velocity vec v =...
Text Solution
|
The refractive index of the material of a prism is sqrt(2) and ...
Text Solution
|
An object is placed at a distance of 40 cm from a cancave mi...
Text Solution
|
The magnetic potential energy stored in a certain inductor is 2...
Text Solution
|
An electron falls from rest through a vertical distance h in a...
Text Solution
|
The electrostic force between the metal plates of an isolated ...
Text Solution
|
A tuning fork is used to produce resonance in a glass tube . T...
Text Solution
|