Given below are two statements:
Statement (I): When currents vary with time, Newton's third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart's law.
In the light of the above statements, choose the correct answer from the options given below: [2024]
Both Statement I and Statement II are false.
Statement I is true but Statement II is false.
Statement I is false but Statement II is true.
Both Statement I and Statement II are true.
(B) Statement is true
Statement is false as Ampere's law depends on Biot Savart's law.
A solenoid of length 0.5 m has a radius of 1 cm and is made up of number of turns. It carries a current of 5 A. If the magnitude of the magnetic field inside the solenoid is then the value of is _______ . [2024]
(500)
= number of turns per unit length
In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero [2024]
outside the cable
in between the two conductors
inside the inner conductor
inside the outer conductor
(1)
A long straight wire of radius carries a steady current . The current is uniformly distributed across its cross-section. The ratio of the magnetic field at and from axis of the wire is ______. [2024]
1 : 1
3 : 4
1 : 4
4 : 1
(1)
Magnetic field inside wire,
Magnetic field outside,
So