A certain electric motor draws a current of 43 A when connected to 120 V. (a) What is the motor's power consumption?   (b) How much energy does it use during  5 h of operation? Express the answer in joules and in kilowatt

Q: Thermal energy is produced in a resistor at a rate of 108 W when the current is 3.74 A. What is the…

A: Electric power Electric Power is the rate that energy is supplied by a source or dissipated by a…

Q: The 120 V electric heater in a coffee maker has a resistance of 15 Ω. How long will it take for this…

A: Given: The voltage of electric heater is V=120 V. The resistance of electric heater is R=15 Ω. The…

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

A:

Q: An electric train operates on 915 V. What is its power consumption when the current flowing through…

A:

Q: The amount of charge that passes through a system is given by Q(t), measured in coulombs. Current is…

A:

Q: The electric oven in your kitchen is plugged into a 240.0V out and it draws a 19.5 A current. If you…

A: Potential difference = 240 V Current = 19.5 A Time = 30 mins = 1800 seconds

Q: A certain electric motor draws a current of  72 A  when connected to 120 V. (a) What is the motor's…

A:

Q: What is the effective resistance of a car's starter motor when 145 A flows through it as the car…

A: The relation between voltage, current and resistance through a conducting medium is, V=IR or, R=VI

Q: A current of 1.78 A fHows through a 58.2 2 resistor for 9.1 min. How much heat was generated by the…

A: Given data:  Current (I) = 1.78 A Resistance (R) = 58.2 Ω Time (t) = 9.1 min Required: Heat…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 7.70 A. Assuming the…

A:

Q: A portable compact disc player is designed to play for 2 hours on a fully charged battery pack. If…

A: Current , I is defines as rate of flow of charge, Q i.e,  I = Q/t , where t is time.

Q: In a cathode ray tube, electrons travel across a distance of 19.2 cm. Over this distance, the…

A: Let I be the current, t be the time, e be the charge of an electron and n be the number of…

Q: What is the effective resistance (in Ω) of a car's starter motor when 146 A flows through it as the…

A: The effective resistance of car's starter motor is 0.076 ohm.

Q: While taking photographs in Death Valley on a day when the temperature is 52.0°C, Bill Hiker finds…

A: Given data: Temperature of Death Valley, T1=52.0OC Current at temperature T1,  I1=1.00 A Other…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 7.70 A. Assuming the…

A:

Q: What is the power of a 1.00×102 MV lightning bolt having a current of 2.00 × 104 A ?

A: Given-         V = 1.00 x 102 MV =1.00 x 108 V          I = 2.00 x 104 A

Q: What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat…

A:

Q: The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the…

A: The mass of the water is found using the equation, The heat energy produced by the current is given…

Q: A certain brand of hotdog cooker works by applying a potential difference of 143 V across opposite…

A:

Q: What current flows through a resistor if 1260 C of charge moves through it in 5.0 minutes?

A: Given data: Charge (q) = 1260 C Time (t) = 5.0 minutes Required: Current (I)

Q: What is the effective resistance (in Ω) of a car's starter motor when 142 A flows through it as the…

A: Given data:  Current (I) = 142 A Voltage (V) = 11.0 V Required: Resistance (R)

Q: A current of 0.5 A flows through a fluorescent lamp of resistance 300 Q. The power dissipated on the…

A: The power dissipated is given by P=I2R Here, I is the current and R is the resistance.

Q: The current in a wire varies with time t according to the relation: I(t) = 6+3t2. where the current…

A:

Q: 3.6 O 106 J, what does it cost to operate a window- type air conditioning for one hour if the unit…

A:

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: An electric train operates on 810 V. What is its power consumption when the current flowing through…

A:

Q: The current in a wire varies with time t according to the relation: I(t) = 108–4t?. where the…

A:

Q: A 4.0 kW heater element from a dryer has a length of 100 cm. If a 20 cm section is removed, what…

A: Initial length of element L = 100 cm  Initial power P = 4.0 kW Final length of element L' = 100 cm -…

Q: If the external source has an emf of +6.0 V and the electrolytic cell is 65% efcient, how much…

A: Electrical power is the power generated due to the flow of electricity.

Q: A certain brand of hotdog cooker works by applying a potential difference of 154 V across opposite…

A: The given values are,   potential difference(V)=154 Volt Current (I)=11.2 Ampere We know the formula…

Q: The time constant is defined as the time required for the current to drop to 0.37 from its original…

A: Solution: Time constant is defined as the time required for the current to drop to 0.37 from its…

Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

A: Option A is the right answer  A. 118.8 P

Q: What If? For what value of  (in volts) will the current in the ammeter read 1.59 A?

A:

Q: The discharging current in the atmosphere due to the small conductivity of air is known to be 1800 A…

A: The discharging current in the atmosphere due to small conductivity of air is given to be 1800 A on…

Q: A man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and…

A: Given Data: The voltage is, V=120 V The threshold of sensation current is, I=1 mA   The expression…

Q: the heating element of an electric cooker operates at 230.0V and carries a current 4.20 A. Assuming…

A:

Q: An electric eel develops a potential difference of 450 V, driving a current of 0.80 A for a 1.0 ms…

A: Given values: Potential difference, V=450 V Driving current, I=0.80 A Duration of pulse, t=1.0 ms

Q: A certain electric motor draws a current of 90 À when connected to 120 V. (a) What is the motor's…

A: Given :      Current, I = 90 A      Voltage, V = 120 V (a) Power, P = I*V                    P = 90…

Q: A certain brand of hot-dog cooker works by applying a potential difference of 120 V across opposite…

A: The expression for the time taken to cook one hot dog, Substitute the values,

Q: If the charging current when measured was 0.35 Ampere at t = 2.5r, where t is the time constant,…

A: We know thatI=I0e-(t?)HereI=Current at time tI0=Intial current?=time constantt=time

Q: An electric utility company supplies a customer's house from the main power lines (120 V) with two…

A:

Q: The ammeter shown in the figure below reads 2.04 A. Find the following. 15.0 V 7.00 N + 5.00 N A…

A: d) Apply Kirchhoff’s voltage law in the upper loop.

Q: A certain brand of hotdog cooker works by applying a potential difference of 147 V across opposite…

A: Given data: Potential difference, V=147V Current, I=10.8 A Energy required to cook one hotdog,…

Q: While taking photographs in Death Valley on a day when the temperature is 59.0°C, Bill Hiker finds…

A: The expression to calculate the current is given by, I'=IRiRf Here, Ri  is the initial conductor…

Q: A current of 0.3 A is passed through a lamp for 2 minutes using a 6-V power supply. The energy…

A: Given : I = 0.3 A t = 2 minutes = 2 x 60 = 120 seconds V = 6 V

Q: A fish-tank heater is rated at 95 W when connected to120 V. The heating element is a coil of…

A: The given:-The heating element is a coil of Nichrome wire A fish-tank heater is rated at 95 W.  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.