An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, thepower consumed will be –(a) 100 W (b) 75 W (c) 50 W (d) 25 W

Q: If a battery is rated at 57.9 A · h, how much total charge can it deliver before it goes "dead"?

A: Given : Battery  rating 57.9 Ampere Hr. Required : Total Charge it can deliver before going dead.

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A: Given data: Marked Voltage = 210 V Power (P) = 630 W Voltage of DC supply (V) = 210 V Required: The…

Q: How much electrical energy (in kilowatt hours) would a 45.0 W light bulb use in 60.0 days if left on…

A: Given that                     The power of the bulb is (P) = 45W                      Time = 60days…

Q: when operated at 120 V. How much charge enters (and leaves) the light bulb in 8.7 min?

A: See solution on next page

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Q: It is proposed to have a water heater that consists of an insulated pipe of 7.5-cm diameter and an…

A: The given values are,

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Q: A water pump draws about 3.8 A when connected to 240 V. What is the cost (with electrical energy at…

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Q: . A battery is rated at 12 V and 160 A-h. How much energy does this battery store? Answer: 6.9 MJ

A: Given that---- V = 12 volt I = 160 amp  t = 1 hour Question ❓ Energy of battery ?

Q: A microwave oven running at 65% efficiency delivers 950 Wto the interior. Find (a) the power drawn…

A: efficiency = 65 %  Output power = 950 W  Voltage of input, V = 120 V

Q: An 20.2 W device has 9.01 V across it. How much charge goes through the device in 4.20 h?

A: Power of the device (P) = 20.2 Wpotential difference (V)= 9.01 VTime (t) = 4.20 hoursusing 1 hour =…

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Q: A rectangular bar of iron is 2.0 cm by 2.0 cm in cross-section and 40 cm long. Calculate its…

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Q: a batch of parts is plated with copper in an electrolytic bath running at 0.20 V and 12.0 A for…

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Q: Calculate the effective resistance (in kΩ) of a pocket calculator that has a 2.15 V battery and…

A: According to Ohm's lawV=IRR=VIHereV=voltageI=currentR=Resistance

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

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Q: A toaster has a Nichrome (a-4.5x104 C) heating element that has a resistance of Ro= 80 N at a…

A: Given-Temperature coefficient α=4.5×10-40 C-1Resistance R0= 80 ΩInitial temperature T=200CFinal…

Q: A 2.5 kW heater element from a dryer has a length of 59 cm. If a 12 cm section is removed, what…

A: Given values:Power of heater element, P = 2.5 KwInitial length of dryer, Li = 59 cm = 0.59 mFinal…

Q: The resistance of electric heater is 14 Ohm when connectedto 120 V What is the power consumption of…

A: Given, the resistance of electric heater is R=14 Ohm when connected to a voltage source, V=120 V We…

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Q: What is the total cost of using all of the following at 9¢ per kilowatt-hour? (i) A 1200-W toaster…

A: Given:- 9¢ per kilowatt-hour  Find;- (i) A 1200-W toaster for 30 min(ii) Six 50-W bulbs for 4 h(iii)…

Q: heating element is marked 210 V,630 w What is the current drawn by the element when connected to 210…

A:

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: An immersion-type heating coil with a resistance of 13 ohms is connected to a 120 V outlet and…

A: Given:  R = 13 ohm  V = 120 V  mass, m = 250 mL = 250 g = 0.25 kg  T = 10 degree C  T' = 100 degree…

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Q: hrom preant in she X-HAy machine ahoe acakmhing Porentiel is 50 ou0 V ah

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Q: The largest number of 100 W electric light bulbs which can be operated from a 240 V supply fitted…

A: Given100 W electric bulbsVoltage=240 VMaximum possible Current (I)= 13 A

Q: A toaster has a Nichrome (a-4.5x10* °C) heating element that has a resistance of Ro- 80 n at a…

A: Given data: Resistance  R0=80Ω Temperature T0 =20°C Coefficient of temperature α=4.5×10-4°C-1…

Q: The people who live in suburbs use simultaneously: 2Hp aircon for 3 hrs. 900 watts toaster for 9…

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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…

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

Q: Appliances that require a lot of power, such as a dryer or a stove, typically run on 240 V, and…

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Q: A 100-W driveway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for…

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

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Q: An electric space heater has a resistance of 8.10 ohms. How much energy does it use when connected…

A: Given data:  Resistance (R) = 8.10 Ω Voltage (V) = 110 V Time (t) = 30 minutes Required: Energy (E)

Q: Why most appliances in the Phillipines are designed to work on an electrical supply of 230V at 60Hz…

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Q: A 2.0 kW heater element from a dryer has a length of 80 cm. If a 10 cm section is removed, what…

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Q: A 20-V storage battery delivers current at the rate of 53 A. In a 28-min period, the heat lost from…

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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)=…

Q: An 18.0 W device has 9.00 V across it. How much charge goes through the device in 4.00 h?

A:

Q: The resistance of electric heater is 32 Ohm when connectedto 120 V What is the power consumption of…

A: Answer:        Given Values,

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 resistance of electric heater is 13 Ohm when connectedto 120 V What is the power consumption of…

A:

Q: If a battery is rated at 60.0 A · h, how much total charge can it deliver before it goes “dead”?

A: Given data The rating of the battery is: I x t = 60 A.h                                   The…

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.