Insulation
Q: A battery lights a bulb. Describe the energy changes involved in the process
A: When a bulb is connected to a battery, then the chemical energy of the battery is transferred into…
Q: Food in microwave is heated by A. conduction B. Neither. C. Radiation D. convection
A: Food in microwave is heated by A. conduction B. Neither. C. Radiation…
Q: What is the energy change in a solar panel
A: Step 1:Step 2:
Q: 1. A coffeemaker has a resistance of 12.5 2 and draws a current of 12.5 A. How much power does it…
A: Given, Resistance = 12.5 ohm Current = 12.5 A We need to calculate, Power =?
Q: Solve the work done by a 500 W electric mixer in 2.5 minutes.
A:
Q: An electric iron connected to a 120 V source draws 7 A of current. How much heat, in joules, does it…
A: Given data: Voltage (V) = 120 V Current (I) = 7 A Time (t) = 1 min = 60 s Required: The heat energy…
Q: What is the total resistance of a circuit if the battery is 1.5 V and the current is 100 mA?
A: according to ohm law current across the resister is directly proportional to the potential…
Q: Application of electric breaking system
A: SOlution: To brief on the applications of the electric braking current.
Q: Which of the following substances would make the best thermal conductor? а. Wood b. Glass С. Brick…
A: Given substances are - Wood Glass Brick Aluminum Wool
Q: For an Ohmic material, the Voltage versus Current (V-I) graph is: O a. non-linear O b. elliptical O…
A: Ohm's Law Ohm's law states that "if current is flowing through two points of a conductor then the…
Q: 20. Calculate the change in temperature of a 283 meter copper pipe that causes its length to…
A:
Q: What is the heat generated (in J) in a heating element of resistance 1000 Ω when a current of 0.1 A…
A: The expression for power is P=I2R Here, P is the power, I is current and R is the resistance The…
Q: Which of the following represents the graph of an Ohmic material? V V A В V V D E
A: To identify : The graph for an ohmic material
Q: Question 4 What is the common mode input voltage, Vicm? Question 5 What is the differential input…
A:
Q: Creep error is associated with which one of the following meters ? Moving iron Meter Energy meter…
A: In the context of metering, the term 'creep' refers to a phenomenon where the meter continues to run…
Q: What does the term ‘demodulation’ in communication system mean?
A: Demodulation is the process of separating some specific information or the signal from the modulated…
Q: Explain how Hydroelectricity is generated. Draw a diagram for the internal circuit
A: hydroelectricity is the form of electricity which is generated usingwater in motion.
Q: Describe the activity of an induction stove.
A: please see the next step for solution
Q: Across a 80W PV module how many numbers of 15W lamps can be connected a.3 b.4 c.5 d.6
A: solution as
Q: Submit your answer to problem 25.4 part b in square centimeters using inner and outer radii of the…
A:
Q: describe and draw a picture of elecstratic conduction
A: Electrostatic conduction is the process of charging a neutral object by keeping a charged object in…
Q: Describe the phenomenon of lightning
A: Describe the phenomenon of lightning
Q: An electric kettle has two heating elements. One brings it tc poil 10 min and the other in 15 min.…
A: Here, we calculate the time for bioling water in kettle as given follow;
Q: define pv cell
A:
Q: Heat current is maximum in which of the following? a) Copper
A: Heat current is maximum in Copper. Heat current is inversely proportional to the Thermal resistance…
Q: Explain the properties of photovoltaic systems connected to the grid.
A: A grid connecting photovoltaic system is an electricity generating system connected to the grid.…
Q: 5. An electric immersion heater has a power rating of 1300 W. If the heater is placed in a 1.3 kg of…
A: Given data: Power (P) = 1300 W Mass (m) = 1.3 kg Initial temperature (Ti) = 20°C Final temperature…
Q: Explain what an insulator is?
A: A material which does not allow the passage of heat,light, electricity, sound through it is called…
Q: Modern electroplate can cover plastic surfaces with silver of 1 μm thick. If a surface area is 150…
A: Here is the step-by-step explanation:Step 1: Conversion of the surface area from square feet to…
Q: Which of the following substances would make the best thermal conductor? a. Aluminum b.…
A: to choose : The best thermal conductor out of aluminum , wool , glass , wood and brick
Q: What would happen if you took one light bulb out of this circuit? Berkeley Point Select one: O a.…
A: The electrical components in a circuit can be connected in a series or in a parallel way. The…
Q: The total (equivalent) resistance of a parallel resistor circuit is greater than any individual…
A: The equivalent resistance is less than the parallel set. So the incorrect option is A.
Q: If a machine has an éfficiency of 50% and an energy input of 29 J, how much useful energy was…
A:
Q: Which of the following materials best conducts electric current? A Gold b. Silver c. Copper d. Glass…
A:
Q: What is the efficiency of the turbine if Power of the wind is 410.5 W and power of turbine is 115.7…
A: Answer: It is given that power of wind is P=410.5 W It is basically the input power given to the…
Q: Identify the electrical properties of materials that are highly conductive and those that are used…
A: Electrical properties of highly conductive materials:- 1. These materials consist of of large number…
Q: 6. An engine releases 1675 J of energy per cycle and performs 200J of work. How much heat is…
A:
Q: 3. For ohmic materials, what is the relationship betwveen resistance and temperature?
A:
Step by step
Solved in 2 steps with 2 images
