4. Resistance of a wire is r ohms. The wire is stretched to double its length, then the resistance inohms is(a) r/2(b) 4г5. The diameter of the nucleus of an atom is of the order of(a) 10³'m(b) 102ºm6. The mass of the proton is roughly how many times the mass of an electron?(a) 184,000(b) 18,4007. The charge of an electron is known to be 1.6 x 10-19 coulomb. In a circuit, the current flowing is1A. How many electrons will be flowing through the circuit in a second?(а) 1.6 х 10°(b) 1.6 х 10198. Two bulbs marked 200 watts-250 volts and 100 watt-250 volts are joined in series to 250 voltssupply. Power consumed in circuit is(a) 33 watt(b) 67 watt9. Ampere second could be the unit of(а) Power(b) Conductance(c) 2r(d) r/4(c) 102' m(d) 101ªm(c) 1840(d) 184(c) 0.625 x 10"(d) 0.625 x 1019(c) 100 watt(d) 300 watt(c) energy(d) charge

In this question, A resistance of the wire is r ohm. If length is streched is double then…

Answered: 4. Resistance of a wire is r ohms. The…

4. Resistance of a wire is r ohms. The wire is stretched to double its length, then the resistance in ohms is (a) r/2 (b) 4r (c) 2r (d) r/4

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

4. Resistance of a wire is r ohms. The wire is stretched to double its length, then the resistance in
ohms is
(a) r/2
(b) 4г
5. The diameter of the nucleus of an atom is of the order of
(a) 10³'m
(b) 102ºm
6. The mass of the proton is roughly how many times the mass of an electron?
(a) 184,000
(b) 18,400
7. The charge of an electron is known to be 1.6 x 10-19 coulomb. In a circuit, the current flowing is
1A. How many electrons will be flowing through the circuit in a second?
(а) 1.6 х 10°
(b) 1.6 х 1019
8. Two bulbs marked 200 watts-250 volts and 100 watt-250 volts are joined in series to 250 volts
supply. Power consumed in circuit is
(a) 33 watt
(b) 67 watt
9. Ampere second could be the unit of
(а) Power
(b) Conductance
(c) 2r
(d) r/4
(c) 102' m
(d) 101ªm
(c) 1840
(d) 184
(c) 0.625 x 10"
(d) 0.625 x 1019
(c) 100 watt
(d) 300 watt
(c) energy
(d) charge

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