Ampere’s Law and its Applications to Infinitely Long Current Carrying Straight Wire and Solenoid NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Ampere’s Law and its Applications to Infinitely Long Current Carrying Straight Wire and Solenoid MCQ Questions


1.
Ampere's circuital law states that the line integral of magnetic field around any closed path is equal to:
A.
μ₀ times the total current enclosed
B.
μ₀ times the current density
C.
ε₀ times the enclosed charge
D.
μ₀ε₀ times the enclosed current
😑 View Answer Rough Work Error
ANSWER :
A. μ₀ times the total current enclosed
2.
The magnetic field at a distance r from an infinitely long straight wire carrying current I is:
A.
μ₀I/(2πr)
B.
μ₀I/r
C.
μ₀I/(2r)
D.
μ₀I/(4πr)
😑 View Answer Rough Work Error
ANSWER :
A. μ₀I/(2πr)
3.
The magnetic field inside a long solenoid carrying current I with n turns per unit length is:
A.
μ₀NI/L
B.
μ₀nI
C.
μ₀NI
D.
μ₀nI/2
😑 View Answer Rough Work Error
ANSWER :
B. μ₀nI
4.
Ampere's law is analogous in electrostatics to:
A.
Gauss's law
B.
Ohm's law
C.
Faraday's law
D.
Coulomb's law
😑 View Answer Rough Work Error
ANSWER :
A. Gauss's law
5.
The magnetic field outside an ideal long solenoid is:
A.
Equal to field inside
B.
Half of inside field
C.
Zero
D.
Infinite
😑 View Answer Rough Work Error
ANSWER :
C. Zero
6.
A long straight wire carries a current of 5 A. The magnetic field at a distance of 10 cm from the wire is:
A.
5 × 10⁻⁶ T
B.
1 × 10⁻⁵ T
C.
1 × 10⁻⁴ T
D.
2 × 10⁻⁵ T
😑 View Answer Rough Work Error
ANSWER :
B. 1 × 10⁻⁵ T