An electrical appliance has a rating 100 W, 120V. The resistance of element of appliance when in use:

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Q: The emf of a cell falls from 3 volts to 2.8 volts when it's terminals are joined to an electrical…

A: The total EMF of a cell is equal to the potential drop across the external load of the circuit plus…

Q: an electromotive force of a cell is 3.85 V anf is connected to a load of 4.25 Ω, the voltage drops…

A: (1)given thatemf, E=3.85 VR=4.25ΩV=2Vvoltage drop=EMF-internal voltage dropV=E-irwhere r is the…

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Q: A circuit has a resistance of 100Ω. How can it be reduced to 60Ω? Prove your answer by solution

A: Given Resistance of the circuit (R1) = 100 ΩRequired resistance = 60 Ω

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A: In electrical terms, resistance is represented by the letter R, and its unit is the ohm (Ω). A…

Q: 25. When a resistance R (ohms) and a capacitance C (farads) are connected in series with an emf E…

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.