A 1750 W radiant heater is constructed to operate at 120 V. What is the current in the heater when the unit is operating? What is the resistance of the heating coil? How much thermal energy is produced in 2.0 h?

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A: Given data: The power of heater is P1=660 W. The voltage of heater is V1=120 V. The drop in voltage…

Q: How much energy is consumed by a 1.1 kW hair dryer used for 12 min? How much energy is consumed by a…

A: Given data Power consumed of hair dryer is P= 1.1 kW Time is t= 12 min =0.2 hour The amount of…

Q: 46. A heart defibrillator is used to resuscitate an accident victim by discharging a capacitor…

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Q: A 72.3 ohm resistor is put into a circuit with a 13 volt battery. What is the power dissipated (in…

A: Given: The resistance of the circuit is 72.3 Ohm. The supplied voltage is 13 V.

Q: When coal is burned in a power plant, it releases approximately 30 kJ of energy for every gram of…

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Q: A light rail commuter train draws 645 A of 590 V DC electricity when accelerating. A.What is its…

A: a)  The required input power is, b)  The required time is,

Q: The constant potential difference across a 2 ohm resistor is 20 volts. How many watts of power are…

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Q: Thermal energy is produced in a resistor at a rate of 100 W when the current is 3.00 A.What is the…

A: Given : rate of thermal energy production = 100 W            current, I  = 3.0 A Thermal energy…

Q: A 5.5-kW water heater operates at 240 V. Should the heater circuit have a 20A or a 30A circuit…

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Q: A central air conditioner in a typical American home operates on a 220-V circuit and draws about 15…

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Q: An electric kettle draws a current of 10 A when connected to the 230 V mains supply. if all the…

A: a) The power supplied is, b) The electrical energy is,

Q: A Galvanometer has an internal resistance of 120 ohm with a maximum allowed current of 250 µA. If…

A: The expression to calculate shunt resistance is. S=IgGI-Ig

Q: A 12 volt car battery is being used to power a circuit with a total resistance of 0.5 Mega-ohm. a)…

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Q: A turbine of a coal burning installation delivers 1,500 hp of mechanical energy to a generator. The…

A: Given, mechanical the output power of coal burning installation is,  PM=1500 HP as 1 hp=746 W so…

Q: A motor is connected to a 12 V battery and has a current of 1.5 A. How much energy is converted if…

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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 capacitor shown below has an initial voltage of 0.15 V before the switch is closed. The…

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Q: B1. There are approximately 20.1 million households that use TVs in the Philippines. On the average,…

A: Given that Power of TV P = 75 W Time t = 8 h Cost rate = 8.75 PHP per kWh Number of TVs are n  =…

Q: A coil is formed by winding 330 turns of insulated 16 gauge copper wire (diameter = 1.0 mm) in a…

A: Given that-N= 330d= 1.0 mm=1×10-3 mR= 17 cm=17×10-2 mρ= 1.69×10-8 ohm-mWe know that-Resistance of…