An electric range has a constant current of 5 A entering the positive voltage terminal with a voltage of 50 V. The range is operated for 6 hours. (a) Find the charge (in coulombs) that passes through the range. (b) Find the power absorbed by the range (in Watt). (c) If electric energy costs 5 cents per kilowatt-hour, determine the cost (in cents) of operating the range for 6 hours.

1- Some copper wire has a resistance of 200 at 20°C. A current is passed through the wire and the temperature rises to 90°C. Determine the resistance of the wire at 90°C, correct to the nearest ohm, assuming that the temperature coefficient of resistance is 0.004/°C at 0°C

Figure 1 shows a graph of Current (mA) vs Voltage (V) for three different materials namely A, B and C. Based on the graph, answer the following questions: (i) Sketch a graph for Power (W) vs Current (mA) for Material B. On the sketched graph, show the values of power when the values of current are 50 mA and 100 mA. Assume Materials A and C have cylindrical shape with the same length. If cross sectional area of Material A is double as compared to Material C, determine the ratio of resistivity of Material A (ii) to Material C. (iii) Find the equivalent conductance, G, when the three materials are connected in series and also when they are connected in parallel. Give your answer in two decimal points. B 100 80 60 40 20 1 3 4 Voltage (V) Figure 1 Current (mA)

3. The figure on the left below shows a schematic diagram of a battery. The voltage measured by U1 is called the terminal voltage given R1 = 1 ohm. In the figure on the right below, the terminal voltage of each of the battery-resistor combination is Vr = 1.5 volts. Find the following: a. The current passing through R5. b. The currents passing through R1 and R3 C. The voltage across R1. d. The voltage of the battery EMF. e. The percentage of voltage loss ot the battery due to the internal resistance R1. The power dissipated by the internal resistance R1. g. The power dissipated by R5 if R1 = R2 = R3 = R4 = 0. h. The percentage of power dissipation loss due to the four resistors R1, R2, R3, and R4 f. R1 R3 S10 R1 U1 1.500 EMF EMF R5 100 V1 R2 $10 EMF R4 EMF EMF

Question 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.

How does a dry cell battery produce voltage? What's the method it uses?  I know it's through a chemical reaction, what's that reaction called?

E oks Question Q1) What is current in terms of charge? a) Current is measured 2A in a DC circuit *How much charge is involved in the process? * How many electrons are involved in the process? The voltage source of this current is 12 Volts. What is the power produced by the source? Transcribed Image Text: Q1) What is current in terms of charge? a) Current is measured 2A in a DC circuit * How much charge is involved in the process? * How many electrons are involved in the process? * The voltage source of this current is 12 Volts. What is the power produced by the source?

1. Clear All in the simulation. Add a positive and negative charge as shown in the diagram below. Plot equipotential lines in 10 V increments. Note: For this exercise the potential do not need to be precise; the patterns will still be evident if you are within +/-0.5 V plot clear equipotential OV voltage Are the equipotential lines evenly spaced (this would suggest a linear relationship) or exponential?

Diagram of the problem, necessary formulas, clearance and numerical solution. A steady current of 0.5 A flows through a wire. How much charge passes through the wire in one minute?

In the figure the ideal batteries have emfs ɛ1 = 20.4 V, ɛ2 = 9.05 V, and ɛ3 = 5.40 V, and the resistances are each 2.40 Q. What are the (a) size and (b) direction (left or right) of current i,? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? (a) Number i Units (b) (c) (d) Number i Units (e) (f) Number i Units (g) (h) Number i Units