How much current will an electric bulb draw from a 220 V source, if the resistance of the bulb filament is 1200 Ω? (b) How much current will an electric heater coil draw from a 220 V source, if the resistance of the heater coil is 100 Ω?

Q: A 1110 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater…

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Q: (A) (in A) f P Assume these parameter values: V = 6 volt and P = 15 W. (A) What is the electric…

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Q: A student in the laboratory connects a 17 Ω resistor, a 31 Ω resistor, and a 36 Ω resistor in series…

A: I=VR1+R2+R3=59 V17 Ω+31 Ω+36 Ω=0.70 A

Q: An experimenter accidentally touches a 240 V dc line. If his skin resistance is 10 000 Ω, what value…

A: Given data :               Voltage (V) = 240 V               Resistance (R) = 10000 Ohm

Q: (a) What energy is dissipated by a lightning bolt having a 20,700 A current, a voltage of 117 MV,…

A: Given, current I = 20700 A  Voltage V = 117 MV = 117 X 106 V Time t =1 ms = 1 x 10-3 s We know the…

Q: An 1100-W toaster, a 750-W electric frying pan, and a 13-W (LED) lamp are plugged into the same…

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Q: A 1400 W refrigerator, a 1500 W electric frying pan, and a 200 W lamp are plugged into the same…

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Q: Find the current through a person and identify the likely effect on her if she touches a 120-V AC…

A: Given:  V = 120 V  (a) R =  300 kilo ohm  (b) R'= 4000 kilo ohm

Q: A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t…

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Q: All household circuits are wired in parallel. A 1250-W toaster, a 320-W blender, and a 75-W lamp are…

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Q: A short circuit in a 120 V appliance cord has a 0.300 resistance. Calculate the temperature rise (in…

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Q: A 2002 load receives power from parallel-connected battery cells, as shown in the figure below.…

A: r1 = 1 ohm V1 = V2 = 12 V r2 = 1 ohm R = 20 ohm

Q: Two resistors, one having a resistance of 145 Ω , are connected in parallel to produce a total…

A: Given,

Q: A 0.7-F capacitor is connected in series with a 9-ohm resistor. If the connection is energized from…

A: Capacitance of capacitor C = 0.7 F Resistance R=9 Ω Voltage V = 11 V Initial charge Q0=175 mC =…

Q: A light bulb marked “73 W at 120 V” is screwed into a socket at one end of a long extension cord, in…

A: The bulb, conductors and the 120-V outlet are all connected in series. Resistance in the bulb

Q: A lamp (R, = 151 Q), an electric heater (R, = 23 Q), and a fan (R, = 51 Q) are connected in parallel…

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Q: A “540 W” electric heater is designed to operate from 120 V lines. (a) What is its operating…

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Q: A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t…

A:

Q: Light bulbs are often assumed to obey Ohm's law. However, this is not really true because their…

A: When any conductor is connected across a voltage source and it also form a closed loop circuit then…

Q: An electric heating coil of resistance R is immersed in 1kg of water at 20°C. The coil is connected…

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Q: Two resistors with values of 25 Ω and 45 Ω, respectively, are connected in parallel and hooked to a…

A: I1=VR1=16 V25 Ω=0.64 A Current passes through 45 Ohm resistor  I1=VR1=16 V45 Ω=0.36 A

Q: A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the…

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Q: A light bulb marked "75 W at 120 V" is screwed into a socket at one end of a long extension cord, in…

A: The resistance across bulb is, The net current through the circuit is,

Q: A current of 2 A, passing through a conductor produces 80 J of heat in 10 s. The resistance of the…

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Q: A student in the laboratory connects a 10 Ω resistor, a 28 Ω resistor, and a 33 Ω resistor in…

A:

Q: A student in the laboratory connects a11 Ω resistor, a 28 Ω resistor, and a 33 Ω resistor in series…

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Q: In the circuit in the figure, a single-ring circuit consisting of a conductor with a resistance of…

A: The questions are regarding charging of a capacitor.

Q: A light bulb marked "60 W [at] 120 V" is screwed into a socket at one end of a long extension cord…

A: Given data The Light bulb marked at 60 W at 120 V. The resistance of the conductor is R = 0.801 Ω.…

Q: Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to…

A: The equation for the power is given as,

Q: A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t…

A: The bulb voltage V = 120 V   The current I = 0.860 A   And      sin333rad/sect    compare  with…

Q: Many home heating systems operate by pumping hot water through radiator pipes. The flow of the water…

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Q: A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t…

A: Given that,Vrms=240Vit=0.707 ASin 125.6 Hztwe know, I=I0Sinωtcomparing equation , we will get…

Q: A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t…

A: Given:-  The light bulb is connected to a Voltage V =120.0 V  The current in the bulb depends on…

Q: water

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Q: (a) What energy is dissipated by a lightning bolt having a 21,800 A current, a voltage of 110 MV,…

A:

Q: 100 MW of power from a power station is transmitted to a distant substation through a cable of…

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Q: Two 100Ω resistors are connected (a) in parallel, and (b) in series, to a 24.0-V battery. (a) Draw…

A: (a) Consider the case when two 100 Ω resistors are attached in parallel. The circuit diagram for 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.