electric current and magnetism - Category wise Question and Answer Practice Test with Solutions

electric current and magnetism PRACTICE TEST [9 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

Question : 1

For electroplating a spoon, it is placed in the voltameter at

a) the position of cathode

b) exactly in the middle of anode and cathode

c) the position of anode

d) anywhere in the electrolyte

Answer: (a)

In electroplating, the metallic ions are positive, which are deposited on cathode.

Question : 2 [UPPCS (Pre) 2007]

In a three-pin electrical plug longest pin should be connected to

a) Neutral terminal

b) Ground terminal

c) Live terminal

d) Any terminal

Answer: (b)

Question : 3

Whenever, current is changed in a coil, an induced e.m.f. is produced in the same coil. This property of the coil is due to

a) self induction

b) eddy currents

c) mutual induction

d) hysteresis

Answer: (a)

Question : 4

Potential at any point inside a charged hollow sphere

a) is a constant

b) decreases with distance from centre

c) increases with distance

d) is zero

Answer: (a)

As, E = $ -{dV}/{dr}$ or, O= $- {dV}/{dr}$

Because electric field inside a charged hollow sphere is zero. or, v = constant

Question : 5

Demagnetisation of magnets can be done by

a) magnetising in the opposite direction

b) rough handling

c) heating

d) All of the above

Answer: (d)

IMPORTANT general science mcq EXERCISES
general science mcq CATEGORIES
Recent Blogs

Recently Added Subject & Categories For All Competitive Exams

Important General Science Biology Practice MCQ Questions

Top General Science Biology In Human Welfare Based Multiple Choice Questions And Answers, Practice MCQ Test For All Competitive Exams, NEET, SSC, Interview

December-06-2022 by Careericons

Continue Reading »

Top 199+ General Science Biology Practice Test, MCQ PDF

Most Important General Science Biology Human Welfare Multiple Choice Questions And Answers (MCQ) PDF, Practice Test For All Competitive Exams, SSC, NEET, RRB

December-01-2022 by Careericons

Continue Reading »

New General Science Biology MCQ Online Practice Test, PDF

Top Most General Science Biology Food Production Multiple Choice Questions And Answers (MCQ), Online GK Practice Test, PDF For All Competitive Exams, NEET

November-29-2022 by Careericons

Continue Reading »

150+ Frequently Asked Biology MCQs for Competitive Exams

Biology Frequently Asked Multiple Choice Questions And Answers (MCQ) For All Competitive Exams. General Science GK Practice Test, PDF For BANK, SSC, RAILWAY

November-23-2022 by Careericons

Continue Reading »