1.9 When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates.. a. The chemical effect of current b. The heating effect of current c. The magnetic effect of current d. The lightning effect of the current 1.10 Fill in the blank. Connecting wires in an electric circuit are made of .. а. Сорper b. Silicon с. Tin d. Lead

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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с. О
C. 0
d. 3
1.9 When electric current is passed through a conducting solution, there is a change of
colour of the solution. This indicates ..
a.
The chemical effect of current
The heating effect of current
c. The magnetic effect of current
d. The lightning effect of the current
1.10 Fill in the blank. Connecting wires in an electric circuit are made of ..
b.
а. Соррer
b. Silicon
c. Tin
d. Lead
SECTION 2
Question 2
Two wires a and b , each of length 40 m and area of cross section 10"m² , are joined in series
and potential difference of 60 Volt is applied between the ends of combined wire. Their
resistances are respectively 40 and 20 ohm. Determine for each wire
(а)
Specific resistance
(b)
Electric field
(c)
Current density
Question 3
A cylindrical wire
stretched to increase its length by 10%. Calculate the percentage
increase in the resistance of this wire.
Question 4
Two 120V light bulbs, one of 25 W and other of 200 W were connected in series across a
240 V line. One bulb burns out almost instantly, Which one was burnt and why?
Question 5
Find the equivalent resistance between point A and B in following combination of resistors
R
PA
Transcribed Image Text:с. О C. 0 d. 3 1.9 When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates .. a. The chemical effect of current The heating effect of current c. The magnetic effect of current d. The lightning effect of the current 1.10 Fill in the blank. Connecting wires in an electric circuit are made of .. b. а. Соррer b. Silicon c. Tin d. Lead SECTION 2 Question 2 Two wires a and b , each of length 40 m and area of cross section 10"m² , are joined in series and potential difference of 60 Volt is applied between the ends of combined wire. Their resistances are respectively 40 and 20 ohm. Determine for each wire (а) Specific resistance (b) Electric field (c) Current density Question 3 A cylindrical wire stretched to increase its length by 10%. Calculate the percentage increase in the resistance of this wire. Question 4 Two 120V light bulbs, one of 25 W and other of 200 W were connected in series across a 240 V line. One bulb burns out almost instantly, Which one was burnt and why? Question 5 Find the equivalent resistance between point A and B in following combination of resistors R PA
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