An electric heater is constructed by applying a potential difference of 120 V across a Nichrome wire that has a total resistance of 8.00 Ω. Find the current carried by the wire and the power rating of the heater.

Q: A resistor is connected in series with a power supply of 20.00 V. The current measure is 0.50 A.…

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Q: solar cell generates an EMF of 6 V. The terminal potential difference of 5.4 V is measured when a 2…

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Q: An AA battery has an emf of 1.50 V. After being used for quitea while, one AA battery has a…

A: Given data: emf of battery is, E=1.50 V. Potential difference of one terminal of battery is, V'=1.30…

Q: The storage battery of a car has an emf of 12V. If the internal resistance of the battery is 0.2 N,…

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Q: A portable coffee heater supplies a potential difference of 12.0 V across a Nichrome heating element…

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Q: A battery having an emf of 9.4 Volts and an internal resistance of 0.04 ohm is connected to an…

A: EMF ε = 9.4 Volts Internal resistance r = 0.04 Ω External resistance R = 1.50 Ω Current i = ?…

Q: A person with body resistance between his hands of10 kΩ accidentally grasps the terminals of a 14 kV…

A: Given data: The resistance is R=10 kΩ. The voltage is V=14 kV. The internal resistance is r=2000 Ω.

Q: A piece of Nichrome wire has a radius of 6.5 x 10-4 m. It is used in a laboratory to make a heater…

A: Given: Radius of the wire, r = 6.5×10-4 mPower , P = 3 ×102 WPotential, V = 120 V   Solution: We…

Q: An idealized ammeter and voltmeter are comnected to the circuit. When switch S in Figure is open,…

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Q: A potentiometer wire has a length 2 m and resistance of 102. It is connected in series with a…

A: To find-Potential gradient VL=?Given-Length of potentiometer wire (L)=2 mResistance of wire (R)=10…

Q: A thermometer made of Platinum has a resistance of 50 2 at 20 C, what is the measured temperature…

A: Resistance of platinum at 20oC = 50 ohm New resistance (R') = 86.8 ohm temperature of coefficient of…

Q: A piece of Nichrome wire has a radius of 6.8 x 10" m. It is used in a laboratory to make a heater…

A: Given data Power dissipated by the heater is P=3.70×102 W Voltage source is V=110 V Radius of wire…

Q: An 18-gauge copper wire (ρ = 1.230 X10 -6Ωm) has a diameter of 1.02 mm. It carries a current of 1.67…

A: Given data:  Resistivity (ρ) = 1.230 × 10-6 Ωm Diameter (d) = 1.02 mm = 1.02 × 10-3 m Current (I) =…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 5.00 A. Assuming the…

A: Given data:  Voltage (V) = 120 V Current (I) = 5.00 A Mass (m) = 0.300 kg Initial temperature (Ti) =…

Q: A battery has emf 24.0 V and internal resistance 3.00 Ω. A resistor of resistance R is connected to…

A: Given: emf (e) =24.0V Internal resistance r=3.00Ω Resistance=R Power (P)= 21.0W

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

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Q: A wire of resistance 5.0 ohm is connected to a battery whose emf O is 2.0 Vand whose internal…

A: Solution attached in the photo

Q: With dry skin of the hands, the resistance between the palms of the hands can reach R1 Ohms). Find…

A: Required : The current that will pass through the human body.

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

A: Given data-Emf of the battery, E=12 VInternal resistance of the battery, r=0.4 ohmMaximum current…

Q: a) What is meant by the "resistance of a conductor"? Write the relation between resistance,…

A: Part(a): The resistance of conductor is defined as it is opposition offered by the the material in…

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: Four 2.2 V cells are connected in series to a 8.0 N light bulb. If the resulting current is 0.75 A,…

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Q: Determine the resistance of a conductor 0.60 m long, with uniform diameter of 5.0 cm and having a…

A: Given data: Length of the rod, L=0.60m Diameter d=5.0 cm=0.05m Resistivity ρ=0.005+10-3 L2 ohm.m

Q: The resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it…

A: Resistance of electric heater is R=90 Ω Voltage is V=120 V Time is t=20 min. Note: 1 min.=60 s 1…

Q: Question 3. Consider the combination of the resistors as in Figure 1. Find (a) the equivalent…

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Q: A length of #8 copper wire (radius = 1.63 mm) has a mass of 24.0 kg and a resistance of 2.061 ohm…

A: Radius of wire is r = 1.63 mm Mass of the wire is m = 24 kg Resistance per km is R = 2.061 ohms

Q: The resistance of an electric heater is  90 Ω  when connected to 120 V. How much energy does it use…

A: The power of heater is P=V2R=120 V290 Ω=160 W

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.