An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 . What is the power rating of the heater?

Q: An electric space heater is connected across a 120 V potential difference. If 1.5 kW of power are…

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Q: 100 W, 110 V and a 50 W, 110 V lamps are connected in series across a 220 V source. If the…

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Q: Considering a current of 0.2 A, what is the electrical potential if the resistance of the wire is 10…

A: Given : Current (I) = 0.2 A Resistance (R) = 10 Ω Electric Potential (V) = ?

Q: A resistor is connected across the terminals of a 9.0-V battery, which delivers 2.2 x 105 J of…

A: Battery =9V Energy delivered =2.2×105 J Time =3hour

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: The storage battery of a car has an emf of 12 v. If the internal resistance of the battery is 0.22,…

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Q: First, a real battery is connected to a load R1 = 1.7 Ω, then the same battery is connected to…

A: Given: The given load resistances are R1=1.7 Ω, and R2=0.5 Ω. The power loss across each resistor is…

Q: An electric heater is constructed by applying a potential difference of 140V across a wire with a…

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Q: A certain wire has a resistance of 140 Ω. What is the resistance of a second wire, made of the same…

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Q: The storage battery of a car has an emf of 12V . If the internal resistance of the battery is 0.42,…

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Q: Two resistors are wired in series with a 123 V battery. The first resistor has a resistance of 6 k…

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Q: The four resistors in the figure have an equivalent resistance of 12 2. The resistances are as…

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Q: A 30 v battery produces a terminal voltage of 29 v when it is attached to a 100 ohm  resistor. What…

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Q: The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.492,…

A: Given that - EMF of the battery Internal Resistance of the battery To Find - We have to determine…

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

A: Equivalent emf, when two cells are in parallel Emf = E1×r2 + E2 × r1/(r2 + r1)  And the equivalent…

Q: An electric lamp of 100 Ω, a toaster of resistance 50 Ω, and a water filter of resistance 500 Ω are…

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Q: What is the ratio of the resistance in a 16-W LED bulb compared to a 100-W incandescent bulb…

A: The voltage drops across LED and incandescent bulb is same. The power across the 16 W LED bulb is

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: 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: 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: A defibrillator sends a 6.5 A current through the chest of a patient by applying a 9500 V voltage as…

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Q: determine the total power dissipated by the resistors

A: Ohms law is used for this relation.

Q: A charged capacitor of capacitance 47 uF is connected to a voltmeter. The voltmeter reading is found…

A: The capacitance of the capacitor, C=47μF The maximum voltage on the capacitor in the charged state,…

Q: A heart defibrillator being used on a patient has an RC time constant of 15.0 ms due to the…

A: Given time constant=15.0 ms Capacitance (C)=7.25 x 10-6 F Initial voltage (Vo)=12000 v Final…

Q: The resistance of an electric heater is  70 Ω  when connected to 120 V. How much energy does it use…

A: Resistance of electric heater (R) = 70 Ω Voltage (V) = 120 V Time (t) = 45 min = 45×60 sec = 2700…

Q: A battery has an internal resistance of 0.01202 and an emf of 9.00 V. What is the maximum current…

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Q: Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a…

A: Resistance of a wire in terms of its resistivity is given as R=ρLAρ is resistivity of the wireL is…

Q: A 1.2 kQ resistor carries a current of 15 mA. What is the potential difference (in V) across the…

A: GivenResistor (R)=1.2 k ohm= 1.2×103 ohmcurrent (I) = 15 mA=15×10-3 ALet V= Pottential difference…

Q: A car battery causes a current of 3.75 A through a car head-lamp and produces 12 V across it.  What…

A: Given data:  Current (I) = 3.75 A Voltage (V) = 12 V Required: Power (P)

Q: volume of metal a new wire is made that is three times longer than t original wire. What is the…

A: R= 21 Ω let the initial length and area of cross-section of wire be=> l and A let new wire's…

Q: s of 15 and 30 Ω are connected in parallel. If the combination is connected in series with a 9.0-V…

A: GivenTwo resistors of 15 and 30 Ω are connected in parallel. If the combination is connected in…

Q: A defibrillator sends a 6.75 A current through the chest of a patient by applying a 9500 V voltage…

A: Given data:  Current (I) = 6.75 A Voltage (V) = 9500 V Required: The resistance (R) in kΩ

Q: An electric heater is constructed by applying a potential difference of 127.2V across a wire with a…

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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.