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Recent questions tagged potential difference
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Grid cables are 15 km long with a resistance of 0.20 Ω km^-1 , powers wasted as heat in these cables are
asked
Mar 23, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
+1
vote
1
answer
How can a galvanometer be converted into an Ammeter ?
asked
Mar 14, 2019
in
JEE
by
kratos
irodov
electrodynamics
electric current
jee
resistance
jee mains
potential difference
+3
votes
1
answer
Mean drift velocity of electron in a copper wire having cross-sectional area 5.0 × 10^-6 m^2 carrying current of 1 A and having number density
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Mar 10, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
+1
vote
1
answer
In a conductor, if the number of conduction electrons per unit volume is 8.5 x 1028 m ^–3
asked
Mar 10, 2019
in
Physics
by
kratos
electric current
jee
resistance
thermodynamics
statistical physics
jee mains
solid state physics
class-12
current electricity
potential difference
+2
votes
1
answer
Magnitude of charge is known as A. charge count B. elementary charge C. elementary count
asked
Mar 8, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
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votes
1
answer
The ratio of powers dissipatted respectively in R and 3R, as shown is :
asked
Mar 6, 2019
in
JEE
by
kratos
electric current
jee
resistance
jee mains
class-12
ohms law
potential difference
+3
votes
1
answer
Rate of flow of electric charge is A. electric current B. conventional current only C. electronic current only
asked
Feb 19, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
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vote
1
answer
Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0 × 10^–7 m^2 carrying a current of 1.5 A.
asked
Feb 15, 2019
in
JEE
by
kratos
cbse
electric current
resistance
semiconductors
jee mains 2019
semiconductor devices
class-12
current electricity
potential difference
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votes
1
answer
To protect wiring from excessive passing of current is A. voltmeter B. fuse C. galvanometer
asked
Feb 11, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
+2
votes
1
answer
Number density for copper is
asked
Feb 7, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
+1
vote
1
answer
If direction of current is from positive to negative, then it is called
asked
Feb 3, 2019
in
Mathematics
by
kratos
electric current
resistance
potential difference
+3
votes
1
answer
The capacitors shown in figure has been charged to a potential difference of V volts,so that it carries a charge CV
asked
Jan 28, 2019
in
JEE
by
kratos
irodov
electrodynamics
capacitance
electrostatics
electric current
jee
resistance
jee mains
ohms law
potential difference
+3
votes
1
answer
What are the uses of moving coil galvanometer ?
asked
Jan 19, 2019
in
JEE
by
kratos
electric current
jee
resistance
jee mains
potential difference
+1
vote
1
answer
Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 2.5 x 10^-7m^2 carrying a current of 1.8 A.
asked
Jan 16, 2019
in
JEE
by
kratos
electric current
class-11
resistance
jee mains 2019
class-12
current electricity
potential difference
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vote
1
answer
The current I through a rod of a certain metallic oxide is given by I = 0.2 V^5/2 , where V is the potential difference across it.
asked
Jan 9, 2019
in
JEE
by
kratos
electric current
jee
resistance
jee mains
class-12
current electricity
ohms law
potential difference
+2
votes
1
answer
Number of conduction electrons per unit volume is A. electron number B. number density
asked
Dec 21, 2018
in
Mathematics
by
kratos
electric current
resistance
potential difference
+1
vote
1
answer
The following table gives the length of three copper wires, their diameters, and the applied potential difference across their ends.
asked
Dec 11, 2018
in
Class 12
by
kratos
cbse
electric current
electricity
resistance
class-10
class-12
current electricity
potential difference
+1
vote
1
answer
How a Galvanometer used as an voltmeter ?
asked
Dec 6, 2018
in
JEE
by
kratos
irodov
electrodynamics
electric current
jee
resistance
jee mains
potential difference
+2
votes
1
answer
If a current of 1 A passes through a point in 1 * then charge passes that point is
asked
Dec 3, 2018
in
Mathematics
by
kratos
electric current
resistance
potential difference
+1
vote
1
answer
A coil consists of 2000 turns of copper wire having a cross - sectional area of 0.8 mm^2.
asked
Nov 24, 2018
in
JEE
by
kratos
irodov
electrodynamics
electric current
jee
resistance
jee mains
class-12
ohms law
potential difference
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