Using Kirchhoff’s current and voltage laws, find the current through each resistor in a simple series-parallel circuit.
Define Ohm’s law. If the resistance of a material doubles when its temperature increases by 50°C, determine the temperature coefficient of resistance.
Derive an expression for the energy stored in a parallel plate capacitor and explain how it changes when a dielectric is introduced.
Define electric potential and calculate the potential at a point that is 5 cm away from a charge of 4 microcoulomb.
Two charges, 𝑞1 and 𝑞2, are placed 10 cm apart in a vacuum. Calculate the electric field at a point midway between them.
Why does tropical cyclone originate over the seas? In which part of the
tropical cyclone do torrential rains and high velocity winds blow and why?
Draw a simplified diagram to show the general circulation of the
atmosphere over the globe. What are the possible reasons for the formation
of subtropical high pressure over 30°
N and S latitudes?
Discuss the factors affecting the speed and direction of wind.
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