A flashlight uses batteries that add up to 3 V and has a powerr output of 0.0005KW.  A) how much current is drawn from the batteries in amp? B) what is the effective resistance of the flashlight!

Q: current of 2.22 is generated from a battery whose internal resistance is 0.06. You measure the…

A: Given : Current , I = 2.22 A  Internal resistance , r = 0.06 ohm  Voltage , V = 0.98 V  To Find :…

Q: A resistor with a 15.0 V potential difference across its ends emits thermal energy at a rate of 327…

A: Let the value of resistance be R ohm . Than power dissipated by the resisitor R with potential…

Q: Car batteries are usually rated in A - h (ampere - hours), which is a unit of charge. This rating…

A: 1 A hr = 3600 Coulumbs  Thus 232 A hr = 835200 C

Q: Problem 7: An extension cord has a resistivity of p = 7.5 × 10-8 2-m. The cord is made from copper…

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Q: yov 20v Gov 2. SR

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Q: You have a LED light bulb that is 6.0 W. You know the potential difference across the light bulb is…

A:

Q: The emf of a battery is 12.0 volts. When the battery delivers a current of 0.500 ampere to a load,…

A: Given data: The emf of battery is ε=12.0 V. The current delivered to load is I=0.5 A. The potential…

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: The resistance between two well-separated points on the human body is about1.5 x 10. If a potential…

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Q: A 3.0 Ohm wire is 4.3 meters long. If the wire is cut in half, the resistance will be...?Explain.

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Q: Two resistors with values of 30 and 49, respectively, are connected in parallel and hooked to a 17 V…

A: Solution: R1 =30 ohm R2 = 49 ohm Voltage = 17 V

Q: Circuit in phone charger. Resistor can only dissipate up to 0.30 Watts of power before melting. When…

A: The power dissipated by the resistor is related to the resistance (R) and the voltage across the…

Q: The power rating of a resistor is the maximum power it can safely dissipate without being damaged by…

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Q: 0. You nave a resistor Of unknown resistance, Rx. W hen the re- sistor is connected to a battery,…

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

A: The resistance of the path is, R=500 Ω The amount of current required is, I=10 mA=10×10-3 A The time…

Q: current of 0.080 A passing through a human body could be fatal. If you accidentally touched a 110 V…

A: Given V = 11O V I = 0.080 A

Q: When current flows through a 240 resistor dissipates energy is 60 watt. How much charge is passing…

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Q: A resistor of 1.8 k has a potential of 4.0 x 10^2 V. a) What is the current through the resistor? b)…

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Q: A 20 m-ohm ammeter is used to measure the current through a 10 ohm resistor with which it is in…

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Q: In a tDCS treatment procedure, 0.85 mA of current flows through a patient’s brain when there is a…

A: The equivalent resistance between the electrodes is given by, R=VI Here, V is the potential…

Q: The rear window defrosters on automobiles are made up of several strips of heater wire connected in…

A: R = 6 ohms There are 6 such wires in parallel connection  Voltage = 12 V

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.