9. What is the ohmmeter reading for each configuration in Fig. 5.96? I kn 1.2 kn 1.2 kn 10 kn 2.2 kl 9.1 k

Content Material Aluminum Copper Gold Iron Platinum Silver Tungsten Problem Resistivity (22.m) 2.65 x 10-8 1.68 x 10-8 2.44 x 10-8 9.71 x 108 10.6 x 10-8 1.59 x 10-8 5.60 x 10-8 As shown below, an insulated tungsten wire is immersed in 398 g of water at 12 °C. The wire is 1.9 cm long and has a cross-sectional area of 0.006 cm². wire A.) Determine how much heat is needed to bring the water to a boil. The specific heat of water is 4186 J/kg.K. Q = B.) Determine how long it will take to bring the water to a boil if a 13 A current is run through the wire. Assume all the thermal energy generated by the wire is absorbed by the water. At =

how would you answer this question i have gotten RL = 30.7 ohm but question b is wrong

Q.10 Write any 5 precautions to be taken to work in an electrical laboratory.

find electrical space with fixed linear load density, infinity length, linear plus r distance from a load. k=9.109 Nm2/C2             εo=8,85.10-12 C2/Nm2

a. A uniform steel girder AB is 6.0 m long and has a mass equivalent to 4.0 kN acting at its centre. The girder rests on two supports at C and B as shown in figure 2. A point load of 20.0 kN is attached to the beam as shown. Prove that the value of the force F would cause the beam to just lift off the support B.

Which of the following is a correct statement of Kirchoff’s junction (current) rule for the junction shown below?  (a) i1 + i2 + i3 = 0  (b) i1 = i2 + i3  (c) i2 = i1 + i3  (d) i3 − i2 − i3 = 0