﻿ Electricity And Magnetism QUESTIONS|page-1

# Electricity And Magnetism QUESTIONS

Exam Name Electricity And Magnetism QUESTIONS Electricity And Magnetism QUESTIONS and Answers exams contains the questions from various competitive exams.These questions are the part of previous year paper.These kind of questions would be helpful in preparing for exams like IAS, PCS, UPSC, NDA, CDS SSC, RRB, PSC, IBPS MASTER EXAM 9999 Anirudh(39313)
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Question: The electrolyte in the dry cell is

Answer:ammonium chloride

Question: The electrolyte in a car battery is

Answer:sulphuric acid

Question: Which type of cell can be used if a device requires 75 A of current for 15 seconds ?

Answer:Lead-acid-cell

Question: Which one of the following statements is correct ? The space surrounding a charge in uniform motion has -

Answer:both electric and magnetic field

Question: Alternating current instead of direct current is used in long distance electric transmission because

Answer:Energy losses are minmum

Question: Five bulbs each rated as 220 V 100 W burnt 4 hours. What is the cost of electricity consumed if the rate is 50 paise per unit ?

Answer:1 Rupee

Question: An ammeter is connected in series with an unknown resistance and a voltmeter is connected across the terminals of the resistance. If the ammeter reads 1.2 A and the Voltmeter reads 18 V the n value of the resistance is-

Answer:15.0

Question: Domestic electrical wiring is basically a :

Answer:parallel connection

Question: A fuse is used in mains electric supply as a safety devices. Which one of the following statements about the fuse is correct ?

Answer:It must have a low melting point

Question: Fluorescent tubes are fitted with a choke. The choke coil:

Answer:reduces current in the circuit

Question: Two wires have their lengths diameters and resistivities all in the ratio of 1:2. If the resistance of the thiner wire is 10 ohm the resistance of the thicker wire is :-

Answer:10 ohm

Question: Which one of the following is printed on a commonly used fluorescent tube light ?

Answer:6500 K

Question: Which one of the following non-metals is not a poor conductor of electricity ?

Answer:selenium

Question: In electric supply lines in India, which parameter is kept constant ?

Answer:frequency

Question: What is the maximum number of different electrical combination possible with three equal resistances ?

Answer:4

Question: A substance which radiates light when heated to a light temperature is said to be

Answer:incandescent

Question: Ohms law does not apply to which of the following ?

Answer:Semi conductors

Question: Which one of the following is used in storage batteries ?

Answer:lead

Question: The circuit element where the impressed voltage is always in phase with the resulting current is:

Answer:an ideal resistor

Question: A permanent magnet repels;

Answer:diamagnetic substances only