Suppose that each headlight of a car uses 3 A and that the driver accidentally left the headlights on. How long will it take for a 12 V battery rated 80 A.h to be fully discharged?

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: Two identical R= 9.91 ohm light bulbs are connected in parallel to a 10.5 volt battery. How much…

A: Given that:- Two identical light bulbs are connected in parallel. Resistance of the bulbs, R1 &…

Q: A 10 N resistor (R1) and a 15 N resistor (R2) are connected in series to an ideal emf device which…

A: Equivalent resistance of two resistor connected in series is given by  Req=R1+R2.........(1) Req=25Ω…

Q: A man wishes to vacuum his car with a canister vacuum cleaner marked 550 W at 120 V. The car is…

A: It is given that, the vacuum cleaner has a mark for the power is P=550 W, and for the voltage is…

Q: The resistance of the path is 482 Ω and a 13.3 mA current is needed. What voltage should be applied

A: Resistance is R=482 Ω Current is I=13.3 mA Note: 1 A=1000 mA Find: Required voltage.

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: Running late to catch a plane, a driver accidentally leaves the headlights on after parking the car…

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Q: The electric circuit to which a television set is connected is protected by a 15 A circuit breaker.…

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Q: Two 120 V light bulbs, one 25 W and one 200 W, were connected in series across a 240 V line. It…

A: Given data: The power of the first bulb is P1=25 W. The power of the second bulb is P2=200 W.…

Q: A 1,000 W immersion heater, a 700 W microwave oven, and a 1.200 W toaster oven are all plugged into…

A: Power consumed from the single outlet, P P= (1000 + 700 + 1200) W  = 2900 W Voltage = 120 V Power…

Q: 3. In Fig. 3, R₁ = 6.000, R₂ E 18.00, and the ideal battery has emf 12.0V. What are the (a) size and…

A: See below

Q: 1. (a) A defibrillator (a device that stores charge on a capacitor used to start the heart beat of a…

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Q: electricity costs

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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: Batteries are rated in terms of ampere-hours (A-h). For example, a battery that can produce a…

A: Since voltage is pretty much fixed for a battery type due to its internal chemistry (alkaline,…

Q: A car owner forgets to turn off the headlights of his car while it is parked in his garage. If the…

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Q: Suppose that each headlight of a car uses 3 A and that the driver accidentally left the headlights…

A: The headlight of the car uses 3A  Battery =12v  To find the time taken for the battery

Q: Your cellphone typically consumes 400mW of power while used t text. If the phone is operated using a…

A: Ohm's law defines a linear relationship between voltage and the current of the circuit. The…

Q: suppose that each headlight of your car uses a 3 A and that you accidentally left the headlights on.…

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Q: Given that V=J/A-s and 1 Kwh = 3.6 x106 J, what does it cost to operate a window-type air…

A: Given that-V= J/A-s     equation 011 Kwh= 3.6×106 Jcurrent, I= 10 AmpVoltage, V= 100 Voltput all…

Q: A 5.5-kW water heater operates at 240 V. Should the heater circuit have a 20A or a 30A circuit…

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Q: b) If electricity costs 20 Bz per kilowatt hour, how much does it cost to operate a 220 V washing…

A: we know that Electric Energy used is given by H = V*i*t where, i is the current flowing= 1.1A V is…

Q: A 180.0 V power line is protected by a 20 A fuse. What is the maximum number of 405 W lamps that can…

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Q: In the figure R1 = 4.31 0, R2 = 12.9 0, and the ideal battery has emf ɛ = 12.6 V. (a) What is the…

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Q: Es-8V Q9.8 In the circuit shown, if the length of the potentiometer LAB=54 cm and the current in the…

A: Length of potentiometer (LAB) = 54 cm LAC (balancing length) = 25 cm Potential of known battery…

Q: The lights on a car is inadvertently left on. They dissipate 95.0 W. About how long will it take to…

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Q: A light bulb has a resistance of 360Ω when turned on. How much current in will flow thru it when it…

A: Given, Resistance=r=360 Ω volatge=v=220 V let current i flow through bulb from ohms law we know the…

Q: b) If electricity costs 15 Bz per kilowatt hour, how much does it cost to operate a 220 V washing…

A: Given data:  Voltage (V) = 220 V Current (I) = 1.5 A Number of hours per day = 3 hours Number of…

Q: What is the effective resistance of a car's starter motor when 150 A flows through it as the car…

A: Battery voltage  V = 11.3V Current flowing I  = 150 AWe have to determine effective resistance of…

Q: electric energy costs

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Q: During open-heart surgery, a defibrillator can be used to bring a patient out of cardiac arrest.…

A: Given dataResistance of path is R=525ΩCurrent is I=12mA

Q: An electric car accelerates for 6.2 s by drawing energy from its 350-V battery pack. During this…

A: Given that:- ∆Q=1400 C∆t=6.2 secE=350 VP=?

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.