A 12 V automobile battery is connected to an electric starter motor. The current through the motor is 207 A. How much power does the motor dissipate? Answer in units of W

Q: A car has a fresh storage battery of e.m.f. 12 V and internal resistance 2 x 10-2 Q. If the starter…

A: The relationship between the terminal voltage V and emf ϵis             V = ϵ - Ir Where I is…

Q: A 0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC…

A: Given that:- Mass of toy car=m=0.718kg

Q: A 9.0V battery moves 3.5 X 10^3C of charge.How much energy does the battery deliver?

A: Given, Voltage of Battery = 9.0V  Charge moved = 3.5×103 C  We know that potential electrical energy…

Q: A 3.6 A current is set up in a circuit for 28 min by a battery with a 5 V emf. By how much is the…

A:

Q: n a household, a 197-W PC is run for 4 hours/day, while a 74-W bulb runs for 8 hours/day. If the…

A:

Q: One heater uses 310 W of power when connected by itself to a battery. Another heater uses 210 W of…

A:

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 5.50 A. Assuming the…

A:

Q: e potential difference across a resting neuron in the human body is about 75.0 mV and carries a…

A: Given data V=75 mV=75×10-3 V Current, I=0.2 mA=0.2×10-3 A

Q: A compact fluorescent lamp (CFL) uses less energy than its equivalent incandescent bulb. How much…

A:

Q: The big mall near Sally and Amy's city has extended their operating hours to accommodate the huge…

A: power of each headlight =43.0 W car battery V=12.0 volts rated Q=92.0 A.h

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

A: Given data:  Power (P) = 60 W Voltage (V) = 120 V Time (t) = 1.0 min = 60 seconds Required: The…

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 that, Voltage, V= 4 VoltCurrent, I=4 mA=4×10-3 A

Q: What is the power rating of a stove that receives 12.5 A of current and requires 150 V to function?…

A: Given that:-Current, i=12.5 APotential, V=150 VoltPower, P=VI

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 5.00 A. Assuming the…

A: Given data:The operating voltage of a coffee maker is V = 120 V.The current carried by the coffee I…

Q: A 9.0-V battery is connected to a resistor so that there is a 0.50-A current through the resistor.…

A: VOLTAGE=9V current (i)=0.50 A  TO FIND : TIME TO DO 200J OF WORK (t)

Q: late energy consumption in KwH

A: In the first circuit 3)    We see in the circuit 100 ohms and 200-ohm resistance in parallel, So…

Q: The potential difference across a resting neuron in the human body is about 75.0 mV and carries a…

A: Given that,Potential difference : V = 75.0 mVcurrent : i = 0.200 mAPower : P = voltagexcurrentHere…

Q: Two 75 W (120V) light bulbs are wired in series, then the combination is connected to a 120 V power…

A:

Q: One heater uses 310 W of power when connected by itself to a battery. Another heater uses 200 W of…

A: Given:- The first heater which is connected to the battery of V voltage uses a power P1= 310 W The…

Q: A 165 W lamp A is connected to the main supply of 230 V. Another lamp B having twice the resistance…

A:

Q: A 120-V motor has mechanical power output of 2.20 hp. It is 85.0% efficient in converting power that…

A: a) The required current in the motor is,

Q: A heater coil is rated 100 W, 200 V. It is cut into two identical parts. Both parts are connected…

A: Given that , rating of a heater coil is 100 W,200V .  The coil is cut into two identical parts with…

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

A: Given Efficiency η=95% Voltage V=12 V Mass m=828 kg (a) The required power is,…

Q: A flashlight, which uses a 3.0 V battery, is turned on for 2.0 minutes. If the current in the…

A: Given that-Battery Voltage, V= 3.0 VoltTime, t= 2 minutes= 120 secondsCurrent, I= 100 mA=0.100 A

Q: 25.68 Compact Fluorescent Bulbs. Compact fluorescent bulbs are much more efficient at producing…

A: (a) Given,P=100Wlife time =750 hourspriceof bulb=0.75 bulbs are on for =4 hours3 years=3×365×4=4380…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 2.50 A. Assuming the…

A:

Q: If electrical energy costs $0.12 per kilowatt-hour, how much do the following events cost? (a) To…

A: Given data: Electrical energy cost = $0.12 /kW.h Power of light bulb (P) = 80.0 W = 0.0800 kW Time…

Q: An electric car is designed to run off a bank of 12.0 V batteries with a total energy storage of…

A: Given Information: The power is P=7200 W The total storage energy is E=2.30×107 J The batteries…

Q: Assuming 89.0% efficiency for the conversion of electrical power by the motor, what current (in A)…

A: Given, Efficiency of the motor, η = 89.0%potential differnce of the batteries, V = 12.0 Vmass of the…

Q: A 9 V battery costs $1.49, and will run a portable CD player for 6 hours. Suppose the battery…

A: The objective of the question is to calculate the cost of the energy in dollars per kilowatt-hour…

Q: What power is dissipated in a circuit through which 0.12 A flows across a potential drop of 3.0 V?…

A: Given that:- A circuit with a current flowing through it i=0.12A And the potential drop is V=3.0 V

Q: A water pump draws about 3.8A when connected to 240 V. What is the cost (with electrical energy at 9…

A: Given:current, I= 3.8 AVoltage, V=240 VRate of electrical energy= 9 cents per kWhTotal time, t=10 h

Q: Some makes of older cars have 6.00 V electrical systems. (a) What is the hot resistance (in 0) of a…

A:

Q: The motor in a toy car is powered by four batteries in series, which produce a total emf of 5.20 V.…

A: Given data: Number of batteries are, N=4. Total emf is, E=5.20 V. Current withdrawn by motor is,…

Q: a CFL or compact flourescent lamp uses less energy that its equivalent incandescent bulb. how much…

A: Electricity can be simply defined as a measure of the flow of electrical current. Electricity is…

Q: A 1750 W radiant heater is constructed to operate at 120 V. What is the current in the heater when…

A:

Q: A 13.0 W LED light bulb is turned on. It has an operating voltage of 120 V. (a) How much current (in…

A: Given:                   Power P = 13 W                  Voltage V = 120V a) Current  flowing…

Q: One heater uses 290 W of power when connected by itself to a battery. Another heater uses 350 W of…

A:

Q: A car battery has ε = 12 V. When the car’s starter motor is running, the battery current is 320 A.…

A: The expression for power, P=VI

Q: A 10 N component is connected to a 12 V battery. How much energy is expended per second?

A: Given:- R= 10 Ω V= 12 V Find:-  How much energy expended per second?

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.