ICSE/ISC Plus 2 Computer Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in


English
Computer Science
Physics
Chemistry
Mathematics

Back to home

Start Practice

Question-1 Five equal resistances each of resistance R are connected as shown in the figure. A battery of 4V volts is connected between A and B. The current flowing in AFCEB will be

(A)	(B)
(C)	(D)

Question-2 The resistance of a discharge tube is

(A) zero	(B)ohmic
(C)non-ohmic	(D)infinity

Question-3 A cell has an emf 1.5 V. When connected across an external resistance of , the terminal potential difference falls to 1.0V. The internal resistance of the cell is

(A)	(B)
(C)	(D)

Question-4 In producing chlorine through electrolysis 100 W power at 125 V is being consumed. How much chlorine per minute is liberated ? (ECE of chlorine is )

(A) 17.6 mg	(B)21.3 mg
(C)24.3 mg	(D)13.6 mg

Question-5 An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20^o C? [The temperature of boiling water is 100^o C]

(A) 6.3 min	(B)8.4 min
(C)12.6 min	(D)4.2 min

Question-6
The resistor R₁ dissipates power P, when connected to a generator. If a resistor R₂ is inserted in series with R₁, the power dissipated by R₁

(A) increases	(B) decreases
(C) remains the same	(D) may increase or decrease depending on the value of R₁ and R₂

Question-7 If a negligibly small current is passed through a wire of length 15m and of resistance then coefficient of resistivity of material, is

(A)	(B)
(C)	(D)

Question-8
Two batteries of emf 4V and 8V with internal resistance are connected in a circuit with a resistance of as shown in figure. The current and potential difference between the point P and Q are

(A)	(B)
(C)	(D)

Question-9
Iron and silicon wires are heated from 30°C to 50°C.The correct statement is that

(A) resistance of both the wires increases	(B) resistance of both the wires decreases
(C) resistance of iron wire increases and that of silicon wire decreases	(D) resistance of iron wire decreases and that of silicon wire increases

Question-10 At conductor is charged to 400 V and then its plates are joined through a resistance of . The heat produced in the resistance is

(A) 0.16 J	(B)1.28 J
(C)0.64 J	(D)0.32 J

Click here to see your answersheet and detailed track records.

Plus 2 Computer Science

ICSE/ISC

Practice in Related Chapters
Alternating Current Circuits
Wave Optics
Atoms
Electromagnetism
Current Electricity
Ray Optics and Optical Instruments
Magnetism
Semiconductor devices
Nuclei
Electrostatics
Electrons and Photons

CONTENTS

Back to home

Start Practice

Practice in Related Chapters