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Recent questions tagged electrical power
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1
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An accumulator battery whose e.m.f. is 12 V and internal resistance 0.8Ω. is connected, in turn,
asked
Apr 3, 2019
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+3
votes
1
answer
Area of cross-section of a copper wire is equal to area of a square of 2mm length
asked
Feb 22, 2019
in
JEE
by
kratos
heating effect of a current
jee
resistance
class-10
icse
jee mains
electric circuits
electrical power
ohms law
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1
answer
Academician E.Kh.Lenz, in his work "On the determination of the direction of induced currents",
asked
Feb 22, 2019
in
JEE
by
kratos
current laws
electromagnetic induction
heating effect of a current
jee
jee mains
electrical power
class-12
current electricity
+1
vote
1
answer
An electric kettle has two coils. When one of them is switched on, the water in the kettle boils in 15 min.
asked
Feb 6, 2019
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+2
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1
answer
A calorimeter contains a quantity of water. A second calorimeter contains a liquid whose specific heat is to be determined.
asked
Nov 30, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+3
votes
1
answer
An electric kettle has two coils. When one of them is switched on, the water in the kettle boils in 6 minutes.
asked
Nov 28, 2018
in
Class 12
by
kratos
work
power and energy
heating effect of a current
neet
jee
jee mains
electric circuits
electrical power
current electricity
+3
votes
1
answer
An electric kettle has two coils when one of these is switched on.
asked
Oct 29, 2018
in
Class 12
by
kratos
heating effect of a current
neet
jee
class-6
jee mains
electric circuits
electrical power
current electricity
+3
votes
1
answer
A steel wire has a resistance twice that of a copper wire. In which wire will more heat be dissipated: (a) in a parallel and
asked
Sep 25, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+3
votes
1
answer
An electric motor has an ohmic resistance of 2Ω and is started from a 110 V line.
asked
Aug 12, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+1
vote
1
answer
A circuit employing a copper wire of 2mm^2 cross-section is protected by a lead fuse wire of 0.2mm^2 cross-section.
asked
Jul 8, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
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vote
1
answer
A large current flows through an iron wire so that the temperature of the wire rises noticeably.
asked
Jul 5, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+3
votes
1
answer
A heating coil has a resistance of 5 and is energized from a source of current with an internal resistance of 20Ω.
asked
Mar 31, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+3
votes
1
answer
At the end of his article "Evolution of heat in conductors", Academician Lenz presented the following problem:
asked
Mar 5, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+2
votes
1
answer
Regarding the operation of array transducers: a. To obtain a focused beam, the innermost element of the annular array is energized first
asked
Feb 23, 2018
in
Physics
by
kratos
heating effect of a current
neet
motion of system of particles
sense organs
class-11
jee
aiims
all about atoms
rigid bodies
recent developments in physics
jee mains
nervous system
electrical power
class-12
+1
vote
1
answer
The line voltage in a charging station is 13V. The internal resistance of an accumulator being charged is 0.4Ω and its residual e.m.f. is 11V.
asked
Feb 22, 2018
in
JEE
by
kratos
heating effect of a current
jee
jee mains
electrical power
+1
vote
1
answer
Given that (a) – 0.11V (b) 0.11V (c) – 0.04 V (d) 0.04 V
asked
Jan 31, 2018
in
Chemistry
by
kratos
heating effect of a current
operational amplifiers
jee
jee mains
electrical power
class-12
electro chemistry
+3
votes
1
answer
An electric kettle has two heating coils. When one of the coils is connected to an a.c. source,
asked
Jan 3, 2018
in
Class 12
by
kratos
heating effect of a current
neet
jee
jee mains
electric circuits
electrical power
current electricity
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