Why is the following situation impossible? An inquisitive physics student takes a 100-W incandescent lightbulb out of its socket and measures its resistance with an ohmmeter. He measures a value of 10.5 Ω. He is able to connect an ammeter to the lightbulb socket to correctly measure the current drawn by the bulb while operating. Inserting the bulb back into the socket and operating the bulb from a 120-V source, he measures the current to be 11.4 A.

Q: A resistor with resistance R is connected to a battery that has emf 12.0 V and internal resistance r…

A: Given data,  ε=12 Vr=0.4 ohmP=80 Wwe know, P=I2R-------(1)where, I=εR+r-------(2)Putting value of I…

Q: A real battery of emf 27 V is connected to a 14 Ω resistor. As a result, current of 1.74 A exists in…

A: Here we use the formula for power dissipated by a resistor.

Q: Three resistors with resistances R1 = R/2 and R2 = R3 = R are connected as shown, and a potential…

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Q: An automobile battery has an emf of 12.4 V and an internal resistance of 0.09 Ω. The headlights have…

A: The resistive circuits are governed by Ohm's law, which is as follows, E=IR        (1) here E is the…

Q: Three resistors are connected in parallel to a 69.5 V battery: R1 = 8.18 N, R2 = 8.01 N and R3 =…

A: Equivalent resistance in the parallel circuit is, 1R=1R1+1R2+1R3

Q: Two batteries "A" and "B", each with emf= 10.5 (V) are connected in series configuration. Note that…

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Q: A battery of 9V is connected in series with resistors of 0.2Ω, 0.3Ω, 0.4Ω ,0.5Ω and 12 Ω,…

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Q: A 10.0-MΩ resistor is connected in series with a 5.00-μF capacitor. When a switch is thrown, these…

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Q: itor that is initially uncharged is connected in series with a resistor and an emf source with EEEMF…

A: Given values:- Emf source voltage,(V)=110 V ----(1) Current through the resistor,(I)=6.6 x 10-5 Amp…

Q: Current Attempt in Progress The figure shows a resistor of resistance R = 6.32 connected to an ideal…

A: Given, Resistance R =6.32Ω Emf of the battery E =14.0V Length of the wire  l =22.0cm =0.22m Radius…

Q: The cord from an appliance is too short to reach the wall outlet in your room. You have two…

A: From ohm's law,  Potential difference (v) = Current (I) *Resistance (R)

Q: the heating element on an electric heater dissipates 4.0 x 10^2 watts of power when connected to a…

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Q: Consider the following. (Take R1 = 11.1 Ω, R2 = 5.1 Ω, and R3 = 4.1 Ω.) (a) Find the equivalent…

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Q: An automobile battery has an emf of 12.6 V and an internal resistance of 0.08 Ω. The headlights have…

A: (a) The current flows across the headlight bulbs is, ε=IR+rI=εR+r=12.6 V5.0 Ω+0.08 Ω=2.48 A (b) The…

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

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Q: Three resistors are connected in series to a 95.6 V battery: R1 = 3.39 Q, R2 = 9.19 N and R3 = 3.96…

A: The total voltage of the circuit will be, Here, I denote the current in the circuit and it will be…

Q: Each of the six real batteries in the figure has an emf of 20.3 V and a resistance of 4.120. (a)…

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Q: The starter in your car is a device of fixed resistance that is designed to operate at a power of…

A: Given: The power at which the starter is designed to operate is 847 W. The voltage of the car…

Q: A lamp in a child's Halloween costume flashes based on an RC discharge of a capacitor through its…

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Q: Ash picks a resistor of unknown resistance (in 2), connects it to some wires, and then plugs in a…

A: Current is Voltage is Find:Resistance of unknown resistor.

Q: A V = 7.58 V battery is connected to a R = 52.2 Ω resistor. How much current (I) runs through the…

A: Given,  V =7.58 V R =52.2 Ω . We have to find the current (I) that runs through the resistor. Let's…

Q: A 120 V potential difference is applied to a space heater whose resistance is 13.7 Ω when hot. At…

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Q: Consider the circuit shown below, with a battery of emf E = 20. V, and resistors R1 = 2.0 Ω, R2 =…

A: Solution:-

Q: A 60-watt light bulb shines at full power when it is connected to a constant power supply producing…

A: Given value--- power = 60 W . Voltage = 100 V . We have to find--- current ?

Q: The power dissipated by a light bulb’s resistor is proportional to how bright the light bulb glows.…

A: The potential is V=110 V Calculating the resistance of the 25 Watt bulb: R25 W=V225 Watt=110 V225…

Q: A student set up a simple circuit with an ohmic lightbulb, battery and switch. When the switch is…

A: Given: initial voltage = V1= 4.2 V initial current = I1= 527 mA voltage = V2= ? V Final current =…

Q: A cylindrical aluminum pipe of length 1.92 m has an inner radius of 1.77 ×10-3 m and an outer radius…

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Q: Two ideal batteries: V1 of potential 27.02V and V2 of potential 5.89V provide power to the following…

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Q: You are given a 45.5 V battery and two resistors of resistances 25 Ω and 97.5 Ω.  Part (a)  Find the…

A: The objective of the question is to find the current and power dissipated in a circuit with two…

Q: when the power companies cannot keep up with high demand, the voltage of the household circuits…

A: Power ratings in any electrical load is depends on voltage supplied so a 100W rated bulb may consume…

Q: A resistor with resistance 31.5 Q is connected to the terminals of a voltage source. (a) Calculate…

A: recall V=IR P=i2R

Q: Problem 2: On a cold day a battery has a terminal voltage of V = 12.21 V and an internal resistance…

A: Here We have to use some basic formula

Q: A light bulb is wired in series with a 118-Ω resistor, and they are connected across a 120.0-V…

A: Given: The resistance in series with bulb is 118 Ohm. The supply voltage is 120 V. The power across…