A portable CD player uses a current of 7.5 mA at a potential difference of 3.5 V. (a) How much energy does the player use in 35 s?(b) Suppose the player has a mass of 0.65 kg. For what lengthof time could the player operate on the energy required to lift itthrough a height of 1.0 m?
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.
A portable CD player uses a current of 7.5 mA at a potential difference of 3.5 V. (a) How much energy does the player use in 35 s?
(b) Suppose the player has a mass of 0.65 kg. For what length
of time could the player operate on the energy required to lift it
through a height of 1.0 m?
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