A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is (a) 400 ohm (b) 600 ohm (c) 800 ohm (d) 1000 ohm

Q: a 10- resistor dissipates 1 w of power when connected to a dc voltage source. if the value of dc…

A: The power is directly proportional to the square of the voltage. P1P2=V12V22 From the given…

Q: A 60 W electric light bulb is connected to a 240 V supply. Determine (a.) the current flowing in the…

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Q: What will be the value of current (in A) through a resistor, when the power dissipated through the…

A: Given, Power, P = 40 W Potential difference, V = 100 V

Q: 5. A current in the graph below enters a battery during charging. Find the total charge in the…

A: We need to calculate charge for given current and time graph . We will do integration of current ,…

Q: compute for the voltage if the current is 30mA and the resistance is 27k ohm

A: Given: Current, I=30 mA Resistance R=27 kΩ

Q: A 1.5k ohms resistor has a voltage drop of 22.5V across it. Can a 1/4W resistor be used for this…

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Q: Q2:- in electric circuit the current (5m A) when the voltage (1V) finds the value of current for the…

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Q: f you have a 2pc battery and a 6w led, how many times does the battery discharge per hour? per…

A: In the above question 2pc will be 2c battery. It is a specification of battery.  2c battery =…

Q: A voltmeter has a resistance of 100 ohm what will be it's reading when it is connected across a cell…

A: Given, A voltmeter has a resistance of 100 ohm. It is connected across a cell of emf 2 V and…

Q: 1. A 50 V dc voltmeter with a 1000 ON sensitivity, and a 100 mA dc ammeter are connected to measure…

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Q: 3. Determine the equivalent resistance between a and i.

A: The given circuit is shown below:

Q: 10 Ohms 10 V 25 V 5 Ohms 3 Ohms 2 Ohms 20 V

A: We need to find out current and voltage for given circuit

Q: Let the voltage output of the battery be 12.0 V. What are the voltage across and the current in each…

A: The solution for the given is; Current flowing through 1ohm resistor is, I=VRI=121I=12 A Then, the…

Q: Solve for the current flowing in the 2.2 kiloohms resistor

A: The given circuit is,

Q: An LED can be lit by a battery consists of 3 lemons that uses copper and zinc as electrodes. The…

A: The power of the given LED is,  V=0.00097 kVI= 15 mAP=VIP=0.00097×103×15×10-3 WattP=0.01455 Watt The…

Q: A heater draws 4 A from a 110 V source. What is the resistance of the heating element? [1]

A: Given: Current drawn I=4 A Source V=110 V

Q: 3. Find the following in the circuit below; a. Total Resistance b. Total Current c. Total Power d.…

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Q: Problem 4. Find the voltage drop across a heater that gives off 7530 J of heat when a 17.4-A current…

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Q: Calculate the equivalent resistance if each resistor has a resistance of 70 Ohms.

A: It is given that:

Q: Compute for the voltage, current, and power of the circuit elements. Determine if their power is…

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Q: A voltmeter have an apparent resistance of 35 K ohm Calculate the voltmeter resistance if the actual…

A: Given, a voltmeter have Apparent resistance, Rapparent=35 KΩ Actual resistance, Ractual=40 KΩ

Q: The Ohmmeter is used to measure the Select one: a. The voltage b. The electrical current c. The…

A: 1. The voltage is measured by using voltmeter.

Q: When resistor R is connected to a 2.4-V source, it consumes 31W Find R (in ohms).   (Use 2 decimal…

A: In the above given question we need to calculate the value of unknown resistance for the given value…

Q: A voltmeter have an apparent resistance of 35 K ohm Calculate the voltmeter resistance if the actual…

A: A voltmeter is a voltage measuring instrument that is connected in parallel to target terminals.…

Q: A circuit consists of a 120-Volt power supply across a single resistor. If the current being drawn…

A: Voltage= 120 V.                                                  Current = 3A

Q: 2. A voltmeter shows a voltage drop of 0.5 V when a 10 kQ resistor is placed in series with a circui…

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Q: Given 4 resistors each having a resistance of 1000 ohms, show how these resistors might be combined…

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Q: Given the current through a resistor of 6 Ohms is 0.5 Amps, Find power absorbed by the resistor.

A: Given: Current through a resistor, I=0.5 A Resistance, R=6 Ω

Q: If the wire is drawn out to three times its original length in the previous problem, by how many…

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Q: In the circuit shown below, the DMM ammeter reading is 6.653 mA. Accordingly, the internal…

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Q: A 100V battery is connected across a resistor and causes a current of 5 mA to flow.  i. Draw this…

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Q: 5-The maximum current that a 2W, 80 k2 resistor can safely conduct is: a.160 kA b. 40 kA c. 5 mA d.…

A: 5. The maximum current across the resistor can be found across the resistor is as follows:…

Q: Calculate the equivalent resistance and equivalent current

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Q: 4. Find the value of V1 if the current through the 1 ohm resistor=0A. 10 ohm 2 ohm 1 ohm V1 5 ohm 3…

A: The circuit is, Current through 1 ohm resistor is 0

Q: An electric power source supplies a constant current of 4 A for 6.5 s to a light bulb. The total…

A: In this question , we will find voltage drop across bulb..

Q: The current through a 100-Ω resistor to be used in a circuit is 0.020A. Find the power rating of the…

A: Given  Resistance R=100 ΩCurrent I=0.02 A

Q: 1. An Iphone uses a standard 1.5V battery. How much resistance is in the circuit if it uses a…

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Q: The lamp of draws a current of 25 mA when connected to a 6-V battery. What is its resistance of the…

A: In this question,  We need to determine the resistance of thr lamp if  Voltage V= 6V across the lamp…

Q: Find the power dissipated in a resistor when the current is 7 mA and the resistance is 12 kΩ.

A: Given : resistance R = 12 kiloohms And current through it is 7 mA

Q: For a given wire gauge, the longer the wire the greater the resistence. A copper wire 750ft long has…

A: Given: Length of copper wire, l=750 ft And resistance of 750 ft. long wire, R=1.89 Ω For the same…

Q: A 100 V battery is connected across a resistor and causes a current of 5mA to flow. Determine the…

A: Battery: A battery is an electrochemical cell. It is collection of one or more cells whose chemical…

Q: A 24 V battery is connected across a load having a resistance of 4 ohms. Determine the energy…

A: given battery 12v and resistance 4 ohm

Q: 1. A dynamometer voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a…

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Q: A 120 N resistor is in series with a resistor whose value is unknown. The voltage drop across the…

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Q: compute for the current passing through the 50 ohm resistor

A: compute for the current passing through the 50 ohm resistor?

Q: A one meter rod 2 cm diameter is drawn until its resistance is 100 times the initial resistance. Its…

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Q: A circuit consists of a 12 V battery connected across a single resistor. If the current in the…

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Q: Given 4 resistors each having a resistance of 1000 ohms, show how these resistors might be combined…

A: We need to find equivalent resistance for given resistor combination .

Q: Q1. A 116 V battery is connected in a circuit having three series connected resistors having…

A: Current in series circuit is same and we will use ohms law to find current in series circuit. By…

Q: 3. Solve for the current in each resistor given the circuit below:

A: The solution is provided in the following section:

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.