An electric space heater has a resistance of 8.10 ohms. How much energy does it use when connected to an electrical outlet with a voltage of 110V for 30 minutes?

Q: The resistance of a bagel toaster is 20 Ω. To prepare a bagel, the toaster is operated for one…

A: Given information: The resistance of the toaster (R) = 20 ohm The voltage across the toaster (V) =…

Q: What is the output voltage of a 3.00-V lithium cell in a digital wristwatch that draws 0.660 mA, if…

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Q: The potential difference across a resistor in a particular electric circuit is 300 V. The current…

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Q: How much current flows thru a 6 Ω resistor in 4 minutes if it is connected to a 9V battery ?

A: Given : R = 6 Ω t = 4 minutes = 4 x 60 = 240 seconds V = 9 V

Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

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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: identical light bulbs are connected to two power supplies, ε1 = 40 V, and ε2 = 80 V. Each light bulb…

A: Equivalent resistance in series  R = R1 + R2  Equivalent resistance in parallel  1/R = 1/R1 + 1/R2

Q: A cell phone operates on a V = 3.61 V battery. If the resistance within the circuitry of the phone…

A: Given: Battery voltage of cell phone, V = 3.61 V Resistance within the circuit, R = 15.4 Ω

Q: The potential difference across a resistor in a particular electric circuit is 330 V. The current…

A: From Ohm’s law:

Q: An electric lamp of 100 Ω, a toaster of resistance 50 Ω, and a water filter of resistance 500 Ω are…

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Q: The resistance of a bagel toaster is 14 Ω. To prepare a bagel, the toaster is operated for one…

A: Given : Resistance (R) = 14 ohm Voltage applied (V) = 120 volt and     Time (t) = 60 seconds

Q: A circuit contains a 10.0 ohm resistor, a 12.0 ohm resistor, and a 6.0 ohm resistor. If they're…

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Q: the heating element on an electric heater dissipates 4.0 x 10^2 watts of power when connected to a…

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Q: The lightbulb used in a computer projector has a resistance of  62 Ω. What is the current through…

A: I=VR

Q: What is the output voltage (in V) of a 3.0000 V lithium cell in a digital wristwatch that draws…

A:

Q: The heating element of a hair dryer dissipates 1500 W when connected to a 120 V outlet. What is the…

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Q: determine the total power dissipated by the resistors

A: Ohms law is used for this relation.

Q: The potential difference across a resistor in a particular electric circuit is 150 V. The current…

A: Given data:  Potential difference (V) = 150 V Current (I) = 18.5 A Required: Resistance (R)

Q: Two identical resistors of 245 Ohms are configured in parallel and connected to a 10.6 V power…

A: Given R = 245 Ohms and the battery connected to it is E = 10.6V when the two resistors in parallel…

Q: What is the resistance of the circuit?

A: Given  Current flowing in circuit =I = 6.7 m Amp  Voltage across the battery= V = 13 V  Charge…

Q: An ammeter whose internal resistance is 57 Ω reads 4.75 mA when connected in a circuit containing a…

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Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

A: Resistance of electric heater (R) = 70 Ω Voltage (V) = 120 V Time (t) = 45 min = 45×60 sec = 2700…

Q: The power dissipated by a light bulb’s resistor is proportional to how bright the light bulb glows.…

A: The potential is V=110 V Calculating the resistance of the 25 Watt bulb: R25 W=V225 Watt=110 V225…

Q: The lightbulb used in a computer projector has a resistance of 80 Ω. What is the current through the…

A: Resistance, R = 80 Ω Voltage, V = 120V

Q: An electric blanket is connected to a 120-V outlet and consumes 350 W of power. What is the…

A: Given data: The voltage of the outlet, V=120V Power consumed by the blanket, P=350W

Q: An immersion heater has a resistance of 5.0 ohms while drawing a current of 3.0 ampheres. What is…

A: Given data -The Resistance of the immersion heater is given as .The current drawn is given as I = 3…

Q: An uncharged condenser in series a 120-volt voltmeter of 10,000 ohms resistance is suddenly…

A: Given-  The resistance of voltmeter , R = 10,000               The emf of battery , E = 100 V At t =…

Q: A toaster has a resistance of 60 Ohms. It draws 2 amps of current from the wall. What is the voltage…

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Q: A device experiences a voltage drop of 4.0 V across it while a current of 4.0 mA flows through it.…

A: Given the voltage V and current I for a device, the power dissipated is given by  P=VI

Q: A 9.0 V battery is connected to four light bulbs (It has four resistors 2 ohms, 4ohms, 5ohms, and 7…

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Q: An ideal battery has an emf of 14.3 V. If it is connected to a circuit and creates a current of…

A: Given data: Battery voltage (V) = 14.3 V Current (I) = 2.18 A Required: Power (P)

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

A: Resistance of electric heater is R=90 Ω Voltage is V=120 V Time is t=20 min. Note: 1 min.=60 s 1…

Q: The heating element of an electric dryer is rated at 4.1 kW when connected to a 240 V line. What is…

A: Given that:- Power of heating element of the electric dryer, P=4.1kW Voltage, V=240 Volt Power…

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

A: The power of heater is P=V2R=120 V290 Ω=160 W

Q: The resistance of a bagel toaster is 11 Ω. To prepare a bagel, the toaster is operated for one…

A: Given:-  The resistance of a bagel toaster is R11 Ω.  the toaster is operated for one minute from a…

Q: A simple circuit contains a 12 V battery and a light bulb with a resistance of 40 Ω. What is the…

A:

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.