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Recent questions tagged electromagnetism
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A direct current of 2A and an alternating current having a maximum value of 2A flow through two identical resistances.
asked
Apr 7, 2019
in
Class 12
by
kratos
electromagnetic induction
neet
ac bridges
electricity
jee
aiims
class-9
jee mains
electromagnetism
magnetism
+3
votes
1
answer
A ring of cast steel has an external diameter of 24 cm and a square cross-section of 3 cm side.
asked
Apr 6, 2019
in
Mathematics
by
kratos
magnetism
electromagnetism
+2
votes
1
answer
The distance between the plates of two identical parallel plate condenser at identical potentials are halved.
asked
Apr 6, 2019
in
Class 12
by
kratos
neet
capacitance
aiims
jee
electromagnetism
jee mains
class-12
+2
votes
1
answer
In the circuit shown the capacitor of capacitance C is initially uncharged. Now the capacitor is
asked
Apr 6, 2019
in
JEE
by
kratos
irodov
electric capacitance
electrodynamics
circuits
capacitance
jee
jee mains
electromagnetism
+3
votes
1
answer
Two identical conducting spheres A and B carry charges Q and 2Q respectively. They are separated by a distance
asked
Apr 5, 2019
in
JEE
by
kratos
electrostatics
electricity
jee
jee mains
electromagnetism
class-12
+1
vote
1
answer
An electric current i enters and leaves a uniform circular wire of radius a through diametrically opposite points.
asked
Apr 5, 2019
in
JEE
by
kratos
irodov
electrodynamics
jee
magnetic field
jee mains
electromagnetism
class-12
+2
votes
1
answer
A cast steel magnetic structure made for a bar of section 8 cm × 2 cm is shown in Fig. .
asked
Apr 5, 2019
in
Mathematics
by
kratos
magnetism
electromagnetism
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vote
1
answer
A conducting bar of mass m is placed on two long conducting rails a distance l apart.
asked
Apr 4, 2019
in
JEE
by
kratos
jee
jee mains
electromagnetism
magnetism
induction
+3
votes
1
answer
In a region of space there is a uniform B field in the plane of the page but no E field.
asked
Apr 4, 2019
in
JEE
by
kratos
magnetism
jee mains
jee
magnetostatics
electromagnetism
+1
vote
1
answer
Unit of luminous intensity is A. m B. kg C. cd
asked
Apr 3, 2019
in
Mathematics
by
kratos
magnetic field
electromagnetism
+1
vote
1
answer
How are the e.m.f in the primary and secondary coils of a transformer related with the number of turns
asked
Apr 2, 2019
in
Class 10
by
kratos
electro magnetism
class-10
icse
magnetic effect of current
electromagnetism
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vote
1
answer
Whenever there is force on magnetic pole, there exists A. magnetic field B. electric field C. current D. voltage
asked
Apr 2, 2019
in
Mathematics
by
kratos
magnetic field
electromagnetism
+3
votes
1
answer
An electron moves with a velocity 1 × 10^3 m/* in a magnetic field of induction 0.3 T at an angle 30°.
asked
Apr 2, 2019
in
Class 12
by
kratos
magnetic fields
irodov
neet
electrodynamics
electromagnetic induction
electricity
jee
aiims
jee mains
electromagnetism
magnetism
class-12
+2
votes
1
answer
Find the vertical coordinates z for equilibrium position of the ring.
asked
Apr 2, 2019
in
JEE
by
kratos
electromagnetic induction
class-11
jee
electromagnetism
jee mains
laws of motion
alternating current
class-12
+2
votes
1
answer
Four capacitors are connected as shown in the adjoining fig. The potential difference between A and B is 1500 volt.
asked
Apr 2, 2019
in
JEE
by
kratos
capacitance
electrostatics
electrostatic potential
jee
jee mains
electromagnetism
class-12
bitsat
+2
votes
1
answer
A nonconducting ring of radius r has charge Q. A magnetic field perpendicular to the plane of the ring changes at the rate dB/dt .
asked
Apr 2, 2019
in
JEE
by
kratos
electromagnetic induction
jee
electromagnetism
jee mains
magnetism
class-12
electric current in conductors
+2
votes
1
answer
Two long, thin, parallel conductors carrying equal currents in the same direction are fixed parallel to the x-axis,
asked
Apr 1, 2019
in
JEE
by
kratos
electromagnetic induction
irodov
electrodynamics
cbse
jee
magnetic field
moving charges and magnetism
electromagnetism
jee mains
current carrying conductor
magnetism
class-12
+1
vote
1
answer
The adjacent diagram shows a small magnet placed near a solenoid AB. Current is switched on
asked
Apr 1, 2019
in
Class 10
by
kratos
electro magnetism
class-10
magnetic effect of current
icse
electromagnetism
+1
vote
1
answer
Derive an expression Magnetic force on a current-carrying conductor and using Oersted’* experiment.
asked
Apr 1, 2019
in
Class 12
by
kratos
moving charges and magnetism
class-10
icse
electromagnetism
class-12
+3
votes
1
answer
When an electric dipole vector P is placed in a uniform electric field vector E then at what angle between vector P and vector E
asked
Mar 30, 2019
in
JEE
by
kratos
cbse
jee
jee mains
electromagnetism
magnetostatics
magnetism
class-12
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