How much electrical energy is converted to thermal energy in 2.00 hrs by an electrical resistance of 400 ohms when the potential applied across it is 90.0V? (Ans: W'=145.8kJ)

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Q: How much voltage does a light bulb receive if 5.00 C delivers a total of 250 J of energy? a. 1250 J…

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A: Given: The time interval is 2.97 h. The resistance of the circuit is 671 Ohm. The potential…

Q: The potential difference across a resting neuron in the human body is about 62.0 mV and carries a…

A: Given Information:- Potential difference across a human neuron in the human body is  V=62…

Q: The resistance of an electric heater is  90 Ω  when connected to 120 V. How much energy does it use…

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Q: If E = 7.50V and r=0.45Ω, find the minimum value of the voltmeter resistance RV for which the…

A: The voltmeter reading is found to be,

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A: Write the expression for the resistance.

Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…

A:

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: P = 30 W V = 120 v t= 4.3 min = 4.3 ×60 = 258 sec  To calculate Q

Q: resistance of an electric heater is 45 Ω when connected to 120 V. How much energy does it use…

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Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 3.07 hours by an…

A:

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: P = V*I  30 = 120* I  I = 30/ 120  I = 0.25 A

Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 1.62 hours by an…

A:

Q: How much more energy does a 100 W light bulb use if it is left on 2.08 hours, versus a high…

A: Energy consumed by 100W bulb is E=Pt=100 W2.08 h=0.208×103 Wh=0.208 kWh

Q: The recovery time of a hot water heater is the time required to heat all the water in the unit to…

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Q: How much electrical energy is transferred to thermal energy in 2.50 hrs by an electrical |…

A: Let V be the potential across the electrical resistance R. Write the power formula and plug the…

Q: A cauterizer, used to stop bleeding in surgery, puts out 2.00 mA at 15.0 kV. What is the resistance…

A: Using ohm's law, V=IRR=VI

Q: Knowing that the power delivered to resistor Rj is 20.0 W, the resistance (in 0) of the resistor R2…

A: Total current I = 3.50 A Current flowing through R1, I1 = 2 A Value of one of the resistance = 10 Ω…

Q: How much electrical energy is transferred to thermal energy in 2.00 h by an electrical resistance of…

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Q: At RM 0.218 Kilowatt-hour, how much it cost to leave a 6 W kitchen bulb on day and night for a 6…

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Q: The power dissipated by a load resistor of 490 is 61W. If the "load" voltage across the resistor is…

A: According to question--- Given values-- power = 61 W. resistance R = 49 ohm. internal resistance r…

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Q: A coil of copper wire has a resistance of 62 Ω at room temperature of 24 °C. What will be its…

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Q: A metal wire has a resistance of 10.00 W at a temperature of 20°C. If the same wire has a resistance…

A: Given: The resistance of the wire at 20 oC is 10 w. The resistance of the wire at 90 oC is 10.55 w.…

Q: The potential difference across a resting neuron in the human body is about 63.0 mV and carries a…

A:

Q: nce of 0.49 Ω at 20.0°C, and an iron wire has a resistance of 0.57 Ω at the same temperature.  a)…

A: We know that we have given that the A copper wire has a resistance of 0.49 Ω at 20.0°C, and an iron…

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: Answer             b. 42.00

Q: 2.00 N 3.00 N E1.00 N 18.0 V 4.00 Q 4. The Power dissipated in the 20 is = W & Power dissipated 40…

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Q: The unit of energy in MKS system is: A) Joule B) Ohm C) Erg D) Volt

A: The MKS system stands for meter kilogram seconds. Joules in the base units is kg m2s-2. It can be…

Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 3.03 hours by an…

A: Given: resistance = R = 488 Ω potential = V = 85 V time = t = 3.03 hrs

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A: Power = 30 w voltage V = 120 V    Current through the light  I = P/ v  I = 30 / 120 = 0.25 A

Q: What power is dissipated in a circuit through which 0.12 A flows across a potential drop of 3.0 V?…

A: The power dissipated in a circuit is given by: P= VIV = potential differenceI = currentgiven:V = 3VI…

Q: The resistance of electric heater is 75 Ohm when connectedto 120 V What is the power consumption of…

A: Given that :Resistance of the electric heater (R) = 75 ohmVoltage ( V) = 120 VPower consumption (P)=…

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Q: A storage battery of emf 6.4 V and internal resistance 0.080 ohm is being charged by a current of 15…

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Q: +4.75 4.141, determine the value of For the circuit in Fig. Rsuch that the maximum power delivered…

A: Given : (Load)  PMax = 3mW  Now, firstly we will find out RTH As per the figure, 1RTH=1R+1R+1R…

Q: The temperature coefficient of resistance of a wire is 0.00125 per degree celcius. At 300K its…

A: Given  Temperature coefficient, TRC = 0.00125 /°C  At ,T1 = 300 K , Resistance, R1= 1 ohm for…

Q: How many kWh of energy does a 550 W toaster use in the morning if it is in operation for a total of…

A: Given: power of toaster P =550 W operation time each day t=6 min = 6/60 hr =0.1 hr cost per KWh =…

Q: The power consumed by a device drawing a 0.8 A when connected to 120 V is A) 12 W B) 15 W C) 60 W D)…

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Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…

A: efficiency of motor = 95 % Battery's potential difference = 12 Volts mass of electric car = 828 kg…

Q: A light bulb is rated at 30 W when operated at 120 V. How much charge enters (and leaves) the light…

A:

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.