a) What is a wattmeter ? b) How many terminals has got the wattmeter ? c) Describe briefly the composition of the wattmeter ? d) The power received by R is minimum when R tends to its maximum value (100 ohms ). Why ? e) What is the value of R if the cursor is half-way ? f) Calculate the (...)

These questions are guide lines for the oral work. a) Give the composition and unit of cpacitors. b) Give the value of voltage uC when t = 0. c) Voltage uC against time is a straight line with a positive slope when t is between 0 and 20 s. Why ? d) Voltage uC against time remains (...)

Listen and Answer n°1 on KCL Make an exposé on the video. You can use the following questions to help you. The lamps do not light when K is open. Why ? Give the value of the electric current given by the cell. Give the reading of ammeter A6. Justify your answer. Give the readings of (...)

Watch this video on discharge of capacitor across R and use the following questions as guidelines for your exposé. What elements does the circuit contain ? What happens to the capacitor when the switch is on position 1 ? Give the value of voltage across it. The LED lights when the switch (...)

watch this video and answer the following questions : These questions are guidelines for your exposé. Feel free to use them in whatever order you like. What a strain gauge is used for ? Where the strain gauges should be placed ? Basically, what is a strain gauge ? What actually does a (...)