A) If H = 10 cos (3.5 × 1011 t – 1.5 β x) az A/m. Use Maxwell’s equations to obtain (12) (CLO-4) Expressions for B, D, E, J and β. Assume μ = 10-6 H/m, ε = 10-11 F/m, and σ = 0 everywhere.
b) For the sliding bar, lying in the field B = 0.6 az T, velocity of the bar v = 2/5 e17y ay m/s and
d = 14 cm. Assume y = 0 at t = 0. Find:

i. v (t = 0)
ii. y (t = 0.6)
iii. v (t = 0.6)
iv. V (potential difference) at t = 0.6 as indicated by the voltmeter.

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c