Explain the working principle of a fuse.
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- #8An old hair dryer has two switches. If the first switch is turned on then the hair dryer blows cold air.When the second switch is also turned on, then hot air is blown. When only the second switch is on, then neither the fan, nor the heating element are working. Draw a circuit diagram of the hair dryer.4. Given the following circuit, determine the voltagea at Va and Vb with respect to grouna. The superposition technique is recomimended. Vb Va R1 1K R2 2K R3 1K R4 1K V2 V1 8V 20V
- Explain AC and DC (currents).10. Determine the maximum number of 50 w/100 v light bulbs that can be connected together in parallel so as not to burn out a 15 A fuse when the bulbs are powered by a 75 v source (assume that the resistance of the fuse is negligible). A. 40 B. 30 C. 20 D. 10 TRA2. An electric circuit contains an operating heating element and a lit lamp. Which statement best explains why the lamp remains lit when the heating element is removed from the circuit? (1) The lamp has less resistance than the heating element. (2) The lamp has more resistance than the heating element. (3) The lamp and heating element were connected in series. (4) The lamp and heating element were connected in parallel. 2
- 4) circuit. On the same graph sketch the output Vout: The graph below shows the input to the illustrated 0.01uF Vin Vaut 1 16kN 0.5 -0.5 -1 -0.002 -0.0015 -0.001 -0.0005 0.0005 0.001 0.0015 0.002 Time (s) Voltage (V)37.) Electrical engineers use resistors to reduce the current through all or part of a circuit a. true b. false#6
- QUESTION 20 In a DC circuit with a single resistor, a current of 13 Amperes flows through a point in the circuit. After a time of 10 minutes, which of these expressions yields how much charge has flowed through the point in this time in SI units? a. 13 divided by 10 b. 13 times 600 c. 13 times 10Explain how did they get this results table. What does 2V ac mean?#09