Home
Class 12
PHYSICS
For maximum power from battery the inter...

For maximum power from battery the internal resistance of battery r is

A

`10 R`

B

`(4R)/(9)`

C

`(R )/(8)`

D

`(10R)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
B


For `P max, r = Reg. :. R = 4R//9`
Promotional Banner

Similar Questions

Explore conceptually related problems

When an ammeter of negligible internal resistance is inserted in series with circuit, it reads 1 A . When a voltmeter of very large resistance is connected across R_(1) , it reads 3 V . But when the points A and B are short-circuited by a conducting wire, then the voltmetre measures 10.5 V across the battery. The internal resistance of the battery is equal to

A 50V battery is connected across a 10 ohm resistor. The current is 4.5A is flowing through the resistor then the internal resistance of the battery is

In fig. battery E is balanced on 55cm length of potentiometer wire but when a resistance of 10Omega is connected in parallel with the battery then it balances on 50cm length of the potentiometer wire then internal resistance r of the battery is:-

A battery supplies 150W and 196 W power to two resistance of 6Omega and 4Omega when they are connected separately to it. The internal resistance of the battery is:-

Two batteries A and B each of e.m.f. 2 V are connected in series to an external resistance R = 1 ohm . If the internal resistance of battery A is 1.9 ohms and that of B is 0.9 ohm , what is the potential difference between the terminals of battery A

A 50 V battery is supplying current of 10 A when connected to a resistor. If the efficiency of the battery at this current is 25%, then the internal resistance of the battery is

A battery of EMF E produces currents 4 A and 3 A when connected to external resistance 1 Omega and 2 Omega respectively. The internal resistance of the battery is

In the given circuit, the reading of ideal voltmeter is E//2 . The internal resistance of the battery is

A current of 2 A flows through a 2 Omega resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9 Omega resistor. The internal resistance of the battery is

A current of 2 A flows through a 2 Omega resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9 Omega resistor. The internal resistance of the battery is