A heating element in a stove is designed to dissipate 2,875 W when connected to 240 V. (a) Assuming the resistance is constant, calculate the current in the heating element if it is connected to 120 V. A(b) Calculate the power it dissipates at that voltage. W

Q: How much would you have to raisethe temperature of a copper wire(originally at20◦C) to increase its…

A:

Q: An electric heater is constructed by applying a potential difference of 121.2V across a wire with a…

A:

Q: A 300-volt electromotive force is applied to an RC-series circuit in which the resistance is 500…

A: Voltage = 300 v  Resistance R = 500 ohm  Capacitance c = 5 micro frade

Q: What is the output voltage of a 3.00-V lithium cell in a digital wristwatch that draws 0.660 mA, if…

A:

Q: A clothes dryer uses 20 A of current.  How much charge flows through the circuit in a single 60…

A: The current in a circuit is defined as the charge flowing though a point in the circuit in unit time…

Q: Calculate the diameter of a 3.9-cm length of tungsten filament in a small lightbulb if its…

A: Given: Length, l=3.9 cm=0.039 Resistance, R=88 Ω Current, I=62 mA=62×10-3 A Resistivity of tungsten,…

Q: A heater has a resistance of 400Q when the potential difference across it is 12V. If this same…

A:

Q: In an automobile, the system voltage varies from about12 V when the car is off to about 13.8 V when…

A: The power delivered to load be defined as, P=V2R

Q: An electric heater is constructed by applying a potential difference of 158.4V across a wire with a…

A: Potential difference = V = 158.4 V Resistance = R = 5 ohm Power will be given by following formula:…

Q: If you made a plot of current versus voltage and calculated a slope of (0.00378 ± 0.000218) A/N.…

A: According to Ohm's law, V=IR , where V is the voltage , I is current  and R is resistance.

Q: How much current flows through a device with a resistance of 15.6ohms if it is connected across a…

A: Ohm's law: ohm's law is defined as the current is directly proportional to the voltage and inversely…

Q: A current density of 6.00 A/m2 exists in the atmosphere at a location where the electric field is…

A:

Q: A microwave oven running at 65% efficiency delivers 950 Wto the interior. Find (a) the power drawn…

A: efficiency = 65 %  Output power = 950 W  Voltage of input, V = 120 V

Q: When 126.0 V of potential difference is applied across a lightbulb, its filament develops a…

A:

Q: A battery is rated that it provides 1.0 mW of power at 9.0 V when fully charged. How do you…

A: Given:Power rating of a battery = 1 mWVoltage = 9 V

Q: The amount of charge flowing through a particular conducting wire is represented by the equation q…

A: charge through a wire is given by :q(t) = at3 + bt2 + c a = 5 A/s2b = 3 A/s At t= 0.9 seconds ,…

Q: When 117.0 V of potential difference is applied across a lightbulb, its filament develops a…

A: The given data are: V=117 VR=183 Ω Here, V denotes the potential difference and R denotes the…

Q: A water heater that is connected across the terminals of a 15.0 V power supply is able to heat 250…

A:

Q: If 18 A flows through a 48 V battery in a certain circuit, how much would it could cost to operate…

A: It is given that, I=18 AV=48 VE.C.=0.11 $/kW.hr

Q: If a toaster has a resistance of 60 ohms and is plugged into a 120 volt outlet, how much current…

A:

Q: What minimum number of 75-W lightbulbs must be connected in parallel to a single 120-V household…

A: The current through one bulb can be calculated as follows,

Q: The resistance of electric heater is 14 Ohm when connectedto 120 V What is the power consumption of…

A: Given, the resistance of electric heater is R=14 Ohm when connected to a voltage source, V=120 V We…

Q: How much is the resistance of an electric iron connected to a 20 V source which draws a current of…

A: Ohm's law V=IR where V is voltage, I is current and R is resistance.

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

A:

Q: A battery has an emf of 3V and an internal resistance of 2 ohms. If a wire with resistance R is…

A:

Q: A 60-cm-long heating wire is connected to a 120 V outlet. If the wire dissipates 45 W, what are (a)…

A:

Q: What is the internal resistance of a dry cell which has an emf of 1.55 Volts if it has a short…

A: E.m.f of the circuit is E = 1.55 Volts Short circuit current is I = 22 A Suppose that internal…

Q: A tungsten filament has a resistance of 1998 ? at 20°C. What will its resistance be at 263°C? 5.19 A…

A: All solids are made up of microscopic particles that are vibrating about their mean positions. The…

Q: An RC circuit takes t = 1.58 s to charge to 45% when a voltage of ΔV = 5.5 V is applied.  If the…

A:

Q: urrent will an electric heater draw from a 110-volt lib]ne if the resistance of the heater when

A: Given:- Voltage V = 110 V  The resistance of the heater = 26.7 Ω Find:-  The current of the electric…

Q: A heating element in a stove is designed to dissipate 3 000 W when connected to 240 V. (a) Assuming…

A: Given data:     The power dissipated is: P = 3000 W The voltage of the resistor is: V = 240 V  The…

Q: A length of copper wire (α = 0.004041 at 20o C) has a resistance of 5 ohms at 20 degrees Celsius.…

A:

Q: If 18 A flows through a 37 V battery in a certain circuit, how much would it could cost to operate…

A:

Q: For the circuit shown in Figure P2.24, determinewhich components are supplying power and which…

A: When an amount of positive current enters to the terminal having a positive charge of the battery…

Q: An electric heater is constructed by applying a potential difference of 107.3V across a wire with a…

A: Given- Potential difference V=107.3 V Resistance R=5 Ω

Q: The formula for the power output P of a battery is P- VI - RI“, where V is the electromotive force…

A: (1) Given :       P = VI -RI2        R = 0.5 ohm       V = 10 volts      At maximum value of power…

Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 3.03 hours by an…

A: Given: resistance = R = 488 Ω potential = V = 85 V time = t = 3.03 hrs

Q: a copper wire is 2.50m long and has a diameter of 2.5 mm. How much current will it draw when…

A: Given data:  A copper wire  Length (L) = 2.50 m Diameter (d) = 2.5 mm = 2.5×10-3 m Voltage (V) = 3.5…

Q: How much would you have to raise the temperature of a copper wire (originally at 20°C) to increase…

A: temperature coefficient of copper wire at 20 °C, α = 0.00386

Q: Using Ohm's Law,The electromotive force of a cell is 1.5V. When connected to an external load of 3.O…

A: Given: The emf of the battery is 1.5 V. The voltage drop is 1.35 V when the external resistor is…

Q: The resistance of electric heater is 13 Ohm when connectedto 120 V What is the power consumption of…

A:

Q: A 1.59-V mercury cell with a capacity of 2.0 A*h is used to power a cardiac pacemaker. if the power…

A:

Q: What is the % conversion efficiency of a battery charger that inputs 22 W and outputs 1100 mA at 12…

A: The output power is Pout=VI=12 V1.1 A=13.2 W

Q: In an experiment on muscle a voltage of 6.64 V is applied, resulting in a current of 57.1 mA.  What…

A:

Q: The conductance G of an object is defined as the reciprocal of the resistance R; that is, G = 1/R.…

A: Given data: Magnitude of current drawn is, I=440 mA=440×10-3 A. Voltage supply is, V'=3.0 V.

Q: A heating element in a stove is designed to dissipate 1,550 W when connected to 240 V. (a) Assuming…

A: According to ohms law, the resistance of the stove is R=V2PR=24021550R=37.16 Ω The current in 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.