Electricity And Magnetism Ii Question Paper
Electricity And Magnetism Ii
Course:Bachelor Of Science In Analytical Chemistry
Institution: Jomo Kenyatta University Of Agriculture And Technology question papers
Exam Year:2007
PHYSICS DEPARTMENT.
CAT I SPH 2201 – ELECTRICITY & MAGNETISM II TIME 1 HOUR DATE 12/07/2007
ATTEMPT ALL QUESTIONS.
Permeability of free space, µo= 4p × 10-7 H/m
(i) Give a mathematical statement of Gauss’s law.
(ii) Determine the electric flux FE of E through a hemisphere of radius Ro given that the field is uniform and perpendicular to the axis of the hemisphere.
(iii) A conducting cylinder of radius RO and length L, and carrying charge -2q, is surrounded by a conducting cylindrical shell of radius R and charge +5q. Use Gauss’s law to find:
(a) The electric field strength at point r outside the conducting shell.
(b) The charge on the inside and outside surfaces of the conducting shell.
(c) The electric field strength in the region between the cylinders.
(iv) (i) Explain what is meant by phase of a sinusoidal alternating current.
(ii) An inductor and a capacitor are connected one at a time to a variable frequency power source. State how, and explain in non-mathematical terms why, the current through the circuit varies as the frequency varies.
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