Navbodh Physics Class 11. We covered all the Navbodh Physics Class 11 in this post for free so that you can practice well for the exam.
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- Important Questions for Class 11 Physics State Board
- Class 11 Physics Chapter 1 Exercise Solutions Maharashtra Board
- CBSE Class 11 Physics Question Paper
How many dry cells, each of emf 1.5 V and internal resistance 0.5 22 must be joined in series with a resistor of 20 Ω to give a current of 0.6 A in the circuit :
(A) 2
(B) 8
(C) 10
(D) 20
Option c – 10
A battery of e.m.f 10 V and internal resistance 0.5 Ω is connected across a variable resistance R. The value of R for which it delivers maximum power is :
(A) 2 Ω
(Β) 1.5Ω
(C) 1Ω
(D) 0.5 Ω
Option d – 0.5 Ω
The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ω, what is the maximum current that can be drawn from the battery?
(A) 30 A
(B) 6 A
(C) 15 A
(D) 5 A
Option a – 30 A
When a battery is connected to 9 Ω resistance its terminal voltage falls to 30 V from 40 V. Internal resistance of the battery in ohm is.
(A) 3
(B) 9
(C) 6
(D) 12
Option a – 3
Three equal resistance across a source of e.m.f together dissipate 10 W of power. What will be the power dissipated if the same resistors are connected in parallel across the same source of e.m.f.:
(A) 5 W
(B) 10 W
(C) 30 W
(D) 90 W
Option d – 90 W
A wire of resistance 8 Ω is bent through 180° at the middle point and the two halves are twisted together. Now the resistance of the wire is :
(A) 4 Ω
(B) 8 Ω
(C) 10 Ω
(D) 2 Ω
Option d – 2 Ω
A wire of length 20 cm and resistance 5 Ω is stretched up to 40 cm. The resistance of the wire will be :
(A) 40 Ω
(B) 20 Ω
(C) 10 Ω
(D) 200 Ω
Option b – 20 Ω
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