Task 4.1 - Calculate basic electrical parameters in D.C. circuits using electrical circuit theory A) What is the current when a charge of: a) 3.0C passes through a lamp in 20s? b) 3600C passes a point in 3.0 minutes? c) 0.2μC flows through a diode in 2.0ms? B) A charge of 4000μC passes each point in a wire in 50s. Calculate: a) The charge in coulombs b) The current in the wire c) The number of electrons per second passing each point in the wire (Electron charge = 1.6 x 10-1°C) C) a) What is the pd across a wire of resistance 8.00 when there is a current of 1.5A through it? b) What is the resistance of a wire if a p.d of 6.0V drives a current of 0.25A through it? c) A p.d of 3.0V is applied across a 150 resistor, what is the current? D) a) What is the power of a microwave oven that takes a current of 7.5A from a 230V supply? b) A small 48W electric heater is connected to a 12 V supply, calculate the current. c) When it is hot an electric bar fire has a resistance of 500. What is the power rating? E) A lamp has a p.d of 12V across it. Calculate how much electrical energy is transferred when a) A charge of 400C passes through it. b) A current of 2.5A passes through it for 30s. F) A vacuum cleaner has a rating of 460W on the 230V mains, what fuse should be fitted?

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task 4 1 calculate basic electrical parameters in d c circuits using e

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Task 4.1 - Calculate basic electrical parameters in D.C. circuits using electrical circuit theory A) What is the current when a charge of: a) 3.0C passes through a lamp in 20s? b) 3600C passes a point in 3.0 minutes? c) 0.2μC flows through a diode in 2.0ms? B) A charge of 4000μC passes each point in a wire in 50s. Cal