Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) B.Sc Hons (Bachelor of Science Honours) 2020 March Previous Question Papers
1 | M-77315 (S1)-2464
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(Honours)Mathematics (Sem.?1)
ELECTRICITY AND MAGNETISM
Subject Code : UC-BSHP-112-19
M.Code : 77315
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION - B & C. have FOUR questions each.
3. Attempt any FIVE questions from SECTION B & C carrying EIGHT marks each.
4. Select atleast TWO questions from SECTION - B & C.
SECTION-A
1. Answer briefly :
a) What do you mean by solenoidal field? Give example.
b) Find a unit normal to the surface x
2
y + 2xz = 4 at (2, -2, 3).
c) Why two electric lines of force do not cross each other?
d) What is an equipotential surface? Can two equipotential surfaces intersect?
e) A sphere of radius 3 cm, has a point charge 7.6 ?C located at its centre. Find the
electric flux through it.
f) State the two boundary conditions for magnetostatics.
g) What is the force experienced by a charged particle moving along the direction of the
magnetic field?
h) Define Poynting vector for electromagnetic waves.
i) Distinguish between conduction and displacement current.
j) Write four Maxwell?s equations in integral form.
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1 | M-77315 (S1)-2464
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(Honours)Mathematics (Sem.?1)
ELECTRICITY AND MAGNETISM
Subject Code : UC-BSHP-112-19
M.Code : 77315
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION - B & C. have FOUR questions each.
3. Attempt any FIVE questions from SECTION B & C carrying EIGHT marks each.
4. Select atleast TWO questions from SECTION - B & C.
SECTION-A
1. Answer briefly :
a) What do you mean by solenoidal field? Give example.
b) Find a unit normal to the surface x
2
y + 2xz = 4 at (2, -2, 3).
c) Why two electric lines of force do not cross each other?
d) What is an equipotential surface? Can two equipotential surfaces intersect?
e) A sphere of radius 3 cm, has a point charge 7.6 ?C located at its centre. Find the
electric flux through it.
f) State the two boundary conditions for magnetostatics.
g) What is the force experienced by a charged particle moving along the direction of the
magnetic field?
h) Define Poynting vector for electromagnetic waves.
i) Distinguish between conduction and displacement current.
j) Write four Maxwell?s equations in integral form.
2 | M-77315 (S1)-2464
SECTION-B
2. Describe gradient of a scalar field. Explain its physical significance.
3. State and prove Gauss divergence theorem. Give its importance.
4. Using Gauss law, calculate the electric field due to a uniformly charged non-conducting
solid sphere at a point (a) outside the sphere (b) on the surface of sphere and (c) inside the
sphere.
5. What do you mean by an electric dipole? What is the value of the potential at a point
(a) on the axis of the dipole (b) on the normal to the axis?
SECTION-C
6. Using Biot and Savart?s law, find the magnetic field due to an infinite straight wire
carrying current.
7. State and prove Ampere?s circuital law of magnetic field. Show that the line integral of
the magnetic field over a closed path is independent of the shape of the path.
8. Derive general wave equation for electric vector and magnetic vector for electromagnetic
waves in a medium with finite permeability and permittivity but no conductivity.
9. State and derive Poynting Theorem for the flow of electromagnetic energy in a medium.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on
any page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 02 April 2020