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Question 217819
3
ans
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Question 210729
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Question 203547
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Question 187132
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Question 182486
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Question #182457
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Question 177552
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Question 172605
1
ans
1
cmts
How to find relative charge of an
proton or electron?
1
ans
1
cmts
what does relative charge mean?
1
ans
0
cmts
why we use the current as conventional in
a circuit?
1
ans
0
cmts
why can′t birds catch by the AC current?
0
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0
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Question 165019
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Question #163166
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Question 159857
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Question 159844
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Two Spheres are charged by +3μC and
−3μC respectively.The charges are
equally distributed in the serface of the
sphere .The distance between two
spheres is 100cm . Now if we Connect
these two spheres with a conducting
wire ,
a)What will be the potential difference
between two ends of that wire?
b)Find the amount of current flow in
the wire if the resistance of that wire
is 100μΩ .
0
ans
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Question 155403
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1
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Question 154930
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Given i(t)=25cos(ωt) ;
u(t)=50[1+(ωt)^(2/(2!)) +(ωt)^(4/(4!)) +(ωt)^(6/(6!)) +...] .
(1/T)∫_0 ^T u(t)×i(t)dt=???
choose the correct answer:
a. 225
b. 425
c. 625
d. an other one
1
ans
0
cmts
A toroid core has N=1200 turns,
length L=80cm,cross-section area
A=60cm^2 ,current I=1.5A.
Compute B and H.Assume an
empty core
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Question 147475
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Question 147434
1
ans
0
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In an RLC series circuit,
R=1kilo ohms,L=0.2H,C=1 F.
If the voltage source is given by:
(V=150 sin 377t )V. What is the
peak current delivered by the
source?
0
ans
0
cmts
Question #147234
0
ans
1
cmts
Question 147233
0
ans
1
cmts
Question 143758
1
ans
0
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Why is the ammeter always connected in series
and the voltmeter in parallel?
0
ans
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Question 136919
0
ans
1
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Question 135209
0
ans
1
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Question 134520
1
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Question 134370
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Question 133765
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Question 133104
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Question 132951
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(1) A cell has an Emf of 2.5 V .It cannot be balanced by a
potentiometer of lenght 100.0 cm when a driver cell of of 2.0V
is connected to it. which of the following best explains why there
is no balance lenght?
A. The current in the wire is too low. B. the balance lenght is too small
C. the emf of the cell is too low. D. The voltae accross the wire is too low.
please site a little explanation.
1
ans
1
cmts
Question 130658
0
ans
6
cmts
Question 106508
1
ans
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Question 90632
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Question 88270
1
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Question 84845
1
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Question 81829
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Question 81828
1
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Question 81005
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Question 80346
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Question 79357
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Physic
A generator(E=230V ; r≠0) supplies
two receivers connected in parallel
(E′_1 =180V ; r′_1 =5Ω and E′_2 =0V ;r′_2 =150Ω)
1. calculate the currents I_(1 ) and I_(2 )
passing through each receptor.
2.calculate the total delivred cur−
rent I by the generator.
which type is the second receiptor?
Thank you for helping me sirs!
For more details, E represents the
electromotive force of generator
; r represents his internal resistance.
E′ and r′ caracterise receiptors.
1
ans
1
cmts
Question 78564
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ans
2
cmts
Hello
please how can we calculate the yield
in % of ohmic conductor in actif circuit
with Battery( with his resistance)
and a motor( with his resistance)
knowing theirs caracteristics and
the intensity?
I need a formula.
1
ans
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cmts
Question 76038
