4 m E 4 m 24 kN B 4 m 12 kN C (b) Assume that the two loads acting on the truss above have been removed and the members AB and BC experience a temperature increase of 60°C. Determine the vertical displacement of joint C for this thermal loading. Take coefficient of thermal expansion of both AB and BC as 12x10-6/°C.

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Electric Circuit and Components

An electrical circuit or electrical network is a pre-determined pathway to make the electrons flow in the desired direction. The flow of electrons will set up a current flow in the circuit. Normally, the flow of electrical current is opposite to the flow of electrons. An electron is a fundamental sub-atomic particle of an atom possessing a negative charge. To initiate the flow of current and achieve the desired output, the electrical circuit should necessarily be composed of closed pathways. The pathways are made-up of good conductors of electricity such as aluminium and copper.