Lab2-The Electric Field

The SI unit for electric field is ___________________.

-1 C of charge is equivalent to ___________ electrons. -5C charge is equivalent to ____________ electrons - 1 proton is equivalent to ____________ C - 3 C is equivalent to __________ protons

The process of ____________ occurs when heat is transferred from a hotter object to a cooler object. In a typical electrical circuit, the ____________ is the device that converts electrical energy into light energy. The law of conservation of ____________ states that energy cannot be created or destroyed, only transformed from one form to another.

_______________1. Is the law that governs the relationship among current, voltage, and resistance in an electric circuit._______________2. Defined as the quantity of charge passing through a given point per unit time. _______________3. Is the flow of positive charges from the positive terminal of the battery to the negative._______________4. Opposition of certain material to the flow of current._______________5. The SI unit of current is ______._______________6. Is a circuit where current flows in one direction._______________7. Is a circuit that contains more than one electrical component connected one after the other in a single path._______________8. When the current flowing through the circuit constantly changes direction and magnitude, the circuit is called _______._______________9. A type of circuit where the current flowing across the system is constant. _______________10. A type of circuit where the equivalent voltage across the system is equal to the voltage drop of each load

What is the total Resistance: ______________ What is the Voltage drop across the Parallel 12-Ohm resistors: ____________ What is the Current down the middle 12-Ohm Path: ______________ What is the Power dissipated in the middle 12-Ohm resistor: ______________

Calculate the power (heat generated per second) in watts, in resistor R2, given that: R1=5 ohm R2=3 ohm R3=6 ohm R4=3 ohm R5=6 ohm V=8 volt

The energy contents, unit costs, and typical conversion efficiencies of various energy sources for use in water heaters are given as follows: 1025 Btu/ft3, $0.012/ft3, and 85 percent for natural gas; 138,700 Btu/gal, $2.2/gal, and 75 percent for heating oil; and 1 kWh/kWh, $0.11/kWh, and 90 percent for electric heaters, respectively. Determine the lowest-cost energy source for water heaters.

Consider Coulomb's law and fill in the paragraph   Distance of Objects   The relationship between the distance of two objects can be described as: __________________________________________________ relationship ___________________________________________________ correlation General Rule: The closer the objects, the ________________________ the force. General Rule: The further apart, the ____________________________ the force.

In the last column in the data table, it says that it's about voltage(v) divided by current(A) is equal to ohms so V/A = ohms. So if it's V/A and if you divide them to get the slope it's (y2-y1)/(x2-x1) then shouldn't V be the y value and A be the x value? And can you also try to use a line of best bit instead of drawing the line through each dot?

The Voltage V in volts , the resistance R in ohms , and the current I in amperes in an electric circuit are related by the formula V = R I. The resistance in an electrical circuit is decreasing at the rate of 4 ohms / s, while the voltage remains constant at 12 volts. At what rate is the current changing at the instant the current is 6 amperes? The current is decreasing at the rate of 12 amperes / s The current is decreasing at the rate of 18 amperes / s The current is increasing at the rate of 18 amperes / s The current is increasing at the rate of 12 amperes / s The current is decreasing at the rate of 3 amperes / s O The current is increasing at the rate of 3 amperes / s

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What is the total Resistance, Current and Power in the Circuit below: R =________ I =________ P=_________

The Second Condition of Equilibrium can be written in a mathematical expression as _____. *   a. Tcw = Tccw   b. Tcw + Tccw = 0   c. Tcw - Tcw = 0   d. Tup = Tdown

Three condensers are connected in parallel with one condenser in series. If all condensers are identical and resultant capacity is 3.75 µF, then the value of individual condenser is (a) 3 µF (b) 5 µF (c) 12 µF (а) 15 иF

A solar panel of length L and width W produces 28.4 kWh in a day. Under the same conditions (i.e. the same amount of solar energy available and the same efficiency) a solar panel of length 2L and width 2W would produce how many kWh in a day? Round off your answer to 2 decimal places, but do not write the unit.

Calculate the unknown quantities. V Q = 3.3 μF 6.2 μF V = 3.9 V 4.7μF 1.5 μF V: = Q= V = Q= =

Consider the circuit shown below. Find V1 (in V), I2 (in A), and I3 (in A). V1=________V? I2=_________A? I2=_________A?

An electron is fired at a speed vi = 4.3 × 106 m/s and at an angle θi = 39.7° between two parallel conducting plates as shown in the figure. If s = 1.7 mm and the voltage difference between the plates is ΔV = 99.8 V, determine how close, w, the electron will get to the bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor.   Round your answer to 6 decimal places.

The relation between resistance R and temperature T for a thermistor (a device that measures temperature) closely follows    R = Ro e[Beta (1/T  - 1/To)]   where R is the resistance in ohms measured at temperature K, and Beta is a material constant.  What are the units of Beta and Ro?  Clearly show  how you decided on your answer.

Question number 17.

Part (b): Watts, volts, and ohms are SI units that can be expressed in the 'base' SI units as follows: kg-m² 53 ohm = kg-m² $³.A21 watt = volt= bottle cm kg.m² $3.A' (Recall that 'A' is the abbreviation for an ampere.) Use algebra and the equation at the top of the page (P=V²/R) to show that the base SI units for watts equal the base SI units for volts²/ohms. You do not need any numbers in this algebraic exercise. Instead, treat each of the base SI units (kg, m, s, A) as if it were an algebra variable (like x or y). Start with the following equation and substitute the base SI units for watt, volt, and ohm: watt = volt² ohm

What is the average amount of electricity used by a computer?

The below perfectly conductive parallel plate core is divided into three equal parts and a material with different conductivity is filled.d = 2.3 [cm]A = 8.3 [cm2]σ1 = 3 [S / cm]σ2 = 2 [S / cm]σ3 = 5 [S / cm]Vo = 11 [V]So what is the equivalent resistance of this system [Ω]?(Sizes are given in units.)

Two different wires, of the same cross-sectional area, are connected in a series as part of a circuit. The conductivty of wire 1 is larger than the conductivity of wire 2. If the electric field in wire 1 is E1, and the electric field through wire 2 is E2, write an expression for the ratio between the conductivity of the two wires. If E1 = 0.95 V/m and E2 = 0.081 V/m, what is the ratio between the conductivity of the wires?

Consider a 3.8-kW PV array with the following characteristics: Maximum power drops 0.496 per °C NOCT - 35 °C and Tamb- 25 °C 3% array loss due to mismatched modules, Dirt loss is 3%, The inverter has an efficiency of 80%. Calculate the DC power Pdc at (PTC) Select one: O a. None of the Answers O b. Pdc 4177.5 W Oc. Pdc -3157.5 W O d. Pdc 3987.5 W Oe. Pdc - 3852.5 W

Question 10.

An electron is fired at a speed vi = 3.1 × 106 m/s and at an angle θi = 36.8° between two parallel conducting plates as shown in the figure. If s = 1.8 mm and the voltage difference between the plates is ΔV = 98.8 V, determine how close, w, the electron will get to the bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor

One 9-volt battery contains 19.0 thousand joules of energy.  A 4-pack of 9-volt batteries cost $14.40 at Lowe's.   Estimate the cost of battery energy in dollars per kilowatt-hour.  Energy conversions are available in Section 2.2 of the textbook. Round your final answer to the nearest $10 per kilowatt-hour.