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

set 1 Online Quiz

Click to Start..
1655 electric current and magnetism based general science mcq set 1 question answer with explanation pdf
general science mcq CATEGORIES

Recently Added Subject & Categories For All Competitive Exams

Coded Inequalities Reasoning Questions & Answers For Bank

New 150+ Coded Inequalities Verbal Reasoning Multiple-Choice Questions and Answers Free Practice Test & Online Quiz PDF For All IBPS PO SO & CLERK 2024 Exams

28-Nov-2023 by Careericons

Continue Reading »

150+ Problem Solving Questions and Answers For Bank Exams

Problem-Solving Verbal Reasoning Concepts based Multiple Choice Questions and Answers Mock Test & Online MCQ Quiz for All 2024 Upcoming IBPS PO Clerk SO Exam

28-Nov-2023 by Careericons

Continue Reading »

New 150+ Syllogism Verbal MCQ Test PDF For IBPS RRB Exams

Free Syllogism Practice Multiple Choice Questions with Solved Answer PDF and All Verbal Reasoning Topics Online Mock Test For IBPS RRB PO & Clerk Exams 2024.

27-Nov-2023 by Careericons

Continue Reading »

New 200+ Syllogism Questions & Answers PDF For SSC Exams

Free Verbal Reasoning Syllogism Multiple Choice Questions with Solved Answer PDF & Online Mock Test. Prepare for all upcoming SSC CGL, CHSL, MTS Exams 2024

25-Nov-2023 by Careericons

Continue Reading »