Now the friends attempt to use their knowledge to work a problem. A heater is rated...
Now the friends attempt to use their knowledge to work a
problem.
A heater is rated at 1600 W at a potential difference of 120 V.
What is the current though the nichrome wire of the heater when it
is turned on?
________ A
What is the resistance in the wire?
________ Ω
Homework Answers
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Now the friends attempt to use their knowledge to work a
problem.
A heater is rated...
When an electric heater is turned on, the Nichrome heating element is at 0o C and...
When an electric heater is turned on, the Nichrome heating element is at 0o C and draws a current of 14 A, with a potential difference of 120 V between the ends of the element. The element heats up to 873° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 × 10-4 (°C)-1.)
When an electric heater is turned on, the Nichrome heating element is at 0° C and...
When an electric heater is turned on, the Nichrome heating element is at 0° C and draws a current of 17 A, with a potential difference of 120 V between the ends of the element. The element heats up to 794° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 10-4 (°C)-1.)
An electric heater has a Nichrome heating element with a resistance of 7 Ω at 20oC....
An electric heater has a Nichrome heating element with a resistance of 7 Ω at 20oC. When 118 V are applied, the electric current heats the Nichrome wire to 980oC. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is α = 0.0004 Co-1)
5. An electric heater has a Nichrome heating element with a resistance of 9 Ω at...
5. An electric heater has a Nichrome heating element with a resistance of 9 Ω at 20°C. When l 16 V are applied, the electric current heats the Nichrome wire to 1060 C What is the operating wattage of this heater? The temperature coefficient of resistivity of Nichrome is α-0.0004 C Watts
A 120-V fish-tank heater is rated at 110 W. 1. Calculate the current through the heater when it is operating. 2. Calculate its resistance. Attachment image
A 120-V fish-tank heater is rated at 110 W.1. Calculate the current through the heater when it is operating.2. Calculate its resistance.No referring, please.
An electric heater is rated at 1360 W, a toaster is rated at 960 W, and...
An electric heater is rated at 1360 W, a toaster is rated at 960 W, and an electric grill is rated at 1750 W. The three appliances are connected in parallel across a 120 V emf source. (a) Find the current in each appliance. heater A toaster A grill A (b) Is a 32.0 A circuit breaker sufficient in this situation? What is the total possible current through the circuit? , ___ because the total current is A
PRACTICE IT Use the worked example above to help you solve this problem. (a) Calculate the...
PRACTICE IT Use the worked example above to help you solve this problem. (a) Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm. 12/m (b) If a potential difference of 10.7 V is maintained across a 1.00 m length of wire, what is the current in the wire? (c) The wire is melted down and recast with triple its original length. Find the new resistance RN as a multiple of the old resistance...
Chapter 26, Problem 041 A 120 V potential difference is applied to a space heater whose...
Chapter 26, Problem 041 A 120 V potential difference is applied to a space heater whose resistance is 15 Ω when hot. (a) At what rate is electrical energy transferred to thermal energy? (b) What is the cost for 5.5 h at US$0.05/kW·h?
Problem 6 A 1.40 kW heater uses a 4.80 m long nichrome wire whose diameter is...
Problem 6 A 1.40 kW heater uses a 4.80 m long nichrome wire whose diameter is 0.84 m heater requires 110 V across the wire, and you should take the resistivity of nichrome m as its heating element 100 10-8 Ω.m. a) What is the resistance of the wire? b) How much current flows through the wire? c) What is the power dissipated by the wire? riate unit definitions to show that an Amp-squared times an Ohm is equal to...
Chapter 26, Problem 053 A 120 V potential difference is applied to a space heater that...
Chapter 26, Problem 053 A 120 V potential difference is applied to a space heater that dissipates 708 W during operation. (a) What is its resistance during operation? (b) At what rate do electrons flow through any cross section of the heater element? (a) Number Uriiii (b) Number Units
When an electric heater is turned on, the Nichrome heating element is at 0o C and draws a current of 14 A, with a potential difference of 120 V between the ends of the element. The element heats up to 873° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 × 10-4 (°C)-1.)
5. An electric heater has a Nichrome heating element with a resistance of 9 Ω at 20°C. When l 16 V are applied, the electric current heats the Nichrome wire to 1060 C What is the operating wattage of this heater? The temperature coefficient of resistivity of Nichrome is α-0.0004 C Watts
PRACTICE IT Use the worked example above to help you solve this problem. (a) Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm. 12/m (b) If a potential difference of 10.7 V is maintained across a 1.00 m length of wire, what is the current in the wire? (c) The wire is melted down and recast with triple its original length. Find the new resistance RN as a multiple of the old resistance...
Problem 6 A 1.40 kW heater uses a 4.80 m long nichrome wire whose diameter is 0.84 m heater requires 110 V across the wire, and you should take the resistivity of nichrome m as its heating element 100 10-8 Ω.m. a) What is the resistance of the wire? b) How much current flows through the wire? c) What is the power dissipated by the wire? riate unit definitions to show that an Amp-squared times an Ohm is equal to...
Chapter 26, Problem 053 A 120 V potential difference is applied to a space heater that dissipates 708 W during operation. (a) What is its resistance during operation? (b) At what rate do electrons flow through any cross section of the heater element? (a) Number Uriiii (b) Number Units
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