Lab Report 1

A 150V moving iron volt meter intended for 50Hz has an inductance of 0.7H and a resistance of 3K ohm. Find the series resistance required to extend the range of instrument to 300V if this 300V - 50Hz instrument used to measure dc voltage find the dc voltage when the scale reading is 200V

Can you please give 5 examples of Kirchhoff's Current Law (KCL) with figure and complete solution each?(I need it for review)

The circuit displayed below is comprised of resistors, a battery,  capacitors and a single pole double throwswitch (SPDT). When switch is in the position of A, the battery is connected to the circuit. When the switch is in the position of B, the battery is then replaced with a wire. In the beginning, the switch is open, and all capacitors are firstly uncharged. The switch is then flipped in the position of A, so the battery is in the circuit. Then, 30.0 seconds after the switch is then submitted to the position of A, what will the potential difference be beyond C3?

Using the circuit in the figure, the experimentercalculates the internal resistance Rx of the structure “X” as“U/I” (U and I: Readings of the instruments).   Can you please explain the solution in detail? Thanks

100 150 + VA- a + -7V, 81. 52 Figure 2 shows a simplified model of a gas-discharge lamp. One characteristic of these lamps is that they exhibit negative resistance; in other words, as current increases the voltage drops further, making such lamps inherently unstable. As such, a current-limiting ballast is required. For the connection shown in the figure: 1. Find the equivalent Thevenin circuit of the lamp. 2. Find the ballast resistance needed to limit the current drawn from a 24-volt source to 6 amperes.

Which of the following statements regarding circuits are true? To find resistance in a parallel circuit, you must sum the individual resitances The direction of conventional current is the direction of positive charge flow. In a circuit, electrons flow from high potential energy (at the negative terminal) to low potential energy (at the positive terminal). When electricity is passed through a lightbulb, the electrons are 'used up' by the bulb. All voltages in a loop sum to 12V The current that flows into a resistor is the same as the current that flows out. To 'short circuit' something means there is an alternate path of less resistance for the current to flow. Switching on a light happens immediately because electrons move from the power source to the bulb incredibly quickly. A 'kilowatt-hour' is a unit of power, not energy.

Simplify the complex circuit below to and find the following if 20-V of voltage is supplied. A) Total / Equivalent ResistanceB) Total CurrentC) Current, Voltage Drop, and Power on each resistor

only 11

Look at the images shown.  Why can we measure resistance with a pencil drawn on a piece of paper? What is the component/material that is on the pencil that gives a high resistance? With the values given on the images, what are the corresponding color codes (indicate tolerance using a 4-band color code scheme)? If the first value is connected in series with the other value, what is the total resistance? If it’s parallel what is the total resistance? 0.449 mega ohms 102.2 kilo ohms

sub-parts to be solved (d) and (e)

A potentiometer consisting of a wire of length L0 has a source of emf, ɛ connected across it. When a standard cell with emf V = 6V, in series with a voltmeter, is connected at one end of the wire and at a distance L = 4 cm along the wire the voltmeter circuit is in balance and the voltmeter reads zero. When the standard cell is replaced by a source of unknown emf the new balance length is found to be 6 cm.   What is the unknown emf? Select one: a. 8 V b. 9 V c. 4 V d. 3 V

is made from a combination of A mixed resistors circuit as shown in Figure parallel and series circuits. The values of the resistances mentioned in the circuit are in Ohm (2) and the supply voltage is in Volt (V). Determine the: (i) Current through the circuit (I). (ii) Voltage drop (V) across the circuit. 0.6 0 4 0 0.5 0

Help me answer, I want to check my solution To get the contribution of the 75V source to iR, we first kill the 50mA source. What is the resulting equivalent resistance in series with the 75K resistor (in Kohms)  To get the contribution of the 75V source to iR, we first kill the 50mA source. What is the resulting value of iR (in mA)? What is the nodal equation for Vx? What is the Thevanin voltage in (Volts) and Thevanin resistance in (Kohms)?

c). write the current equation for the circuit below 60 mA 20 mA 14 Is 40 mA 30 mA Determine the missing currents from the equation in c).

A voltage divider of 50 ohms is connected across a 100 V DC source. A load resistance of 10 ohms is connected across a tap in the potential divider and the negative of the source. If a current of 4 A flows towards the load, what is the current supplied by the source? (Remember, a voltage divider is a network of resistors that are connected in series the purpose of which is to divide a voltage into each of the resistors.) Show complete solution.

....hdhddd...

Two batteries, A and B, are connected in parallel and an 80 ohm resistor is connected across thebattery terminals. The e.m.f. and the internal resistance of battery A are l00V and 5 ohm respectively,and the corresponding values for battery B are 95V and 3 ohm respectively. Find (a) the value anddirection of the current in each battery and (b) the terminal voltage

lell L1 R Ro 2. In this figure, assume arbitrary numbers for R1, R2, L1, and L2 including some number for the battery E. Find the rate of current in which inductor one (L1) is changing just after the switch is closed. Next, find the current in L1 after some time after the switch has been closed. lell

In a series circuit, certain general rules may be stated with regard to quantities of voltage, current, resistance, and power. Express these rules, using your own words: "In a series circuit, voltage..." "In a series circuit, current..." "In a series circuit, resistance..." "In a series circuit, power..." For each of these rules, explain why it is true.

Shown below is a DC circuit that contains a number of switches. Each switch is resistanceless when closed. All of the connecting wires may be considered to have zero resistance. All of the resistors shown are identical. The circuit contains an ideal voltmeter. The diagram shows all of the switches open. Beside the diagram are eight different switch configurations for the circuit. Rank these configurations in terms of the voltmeter reading. That is, put first the configuration for which the voltmeter gives the largest reading, and put last the configuration for which the yoltmeter gives the smallest reading. If two or more configurations produce the same voltmeter reading, give these configurations equal ranking. S2 S3 Configuration Wr A Орen Open Орел B Орen Ореn Closed W- Орen Closed Орen r42 Closed Орen Closed S2 Closed Open Орen F Closed Орen Clošed S3 G Closed Closed Open 1.64 Closed Closed Closed 3. 5. 6 7_ 8_ Smallest Lárgest 1 2 Or, all configurations produce the same voltméter…

Solve the question and show solution. Note: The answer is given on the bottom right side of the image, just show the solution on how to get it. Thanks!!!

Sample Problem continued with solution process Step 1: Drawing a circuit diagram and labeling the unknowns. All told there are 5 elements, 4 resistors and 1 voltage source. For resistors I intentionally label the currents going from + to -. That way, I can write V = I R. If I labeled the current through a resistor from – to + as I, then I have to write the equation by Ohm's law as V = -I R. For convenience I label the current i, through the voltage source from – to +. (There is no Ohm's law for a source to follow. Do not try to have a resistance in a source. What is a V, 3 + (1 |1A 10 Ω + V, iş V2 20 i2 V3 + 2 20Ω 4 İz I then examine the circuit. I see that this is a obvious consequence of the labeling: iz = i,= i, All are current going through one path with the same direction as I labeled. If I had labeled one in the opposite direction, I just had to put in a minus sign. source? A voltage source is to guarantee the voltage drop from its + to its – a fixed voltage V,. I denote four…

A 75-V DC voltage source is coupled to a 25 kOhm load resistor through a 35 kOhm source resistance. A Voltmeter-A has a sensitivity 8 kOhm/V with a measuring range of 0-35V. Calculate error in the voltmeter reading expressed in a percentage of the true value.

1) Draw a circuit below which has resistors both in series and in parallel (each of whose resistances is an integer less than 121 ohms, and different than the others), as well as a DC power source (with an integer potential of less than 121V).           2) Find the equivalent resistance of the resistors (there will be at least 3 of them if they are both in series and parallel), and in a chart figure out the current, voltage, resistance and power through each element.   Voltage (V) Current (A) Resistance (Ohms) Power (W)