(i) A battery has an emf of 3.0 V and an internal resistance of 0.0200 Ω. What is the terminal voltage when the current drawn from the battery is 2.0 A? The terminal voltage is = (ii) If a current of 75 mA exists in a metal wire, how many electrons flow past a given cross section of the wire in 3 min? Number of electrons flow past a given cross section of the wire =
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.
(i) A battery has an emf of 3.0 V and an internal resistance of 0.0200 Ω. What is the terminal voltage when the current drawn from the battery is 2.0 A?
The terminal voltage is =
(ii) If a current of 75 mA exists in a metal wire, how many electrons flow past a given cross section of the wire in 3 min?
Number of electrons flow past a given cross section of the wire =
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