In the circuit shown on the right, the rate at which R1 dissipating electrical energy is 20.0W. (a) Find R1 and R2. (b) What is the emf of the battery? (c) Find the current through both R2 and the 10.0-Ω resistor.
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.
In the circuit shown on the right, the rate at which R1 dissipating electrical energy is 20.0W.
(a) Find R1 and R2.
(b) What is the emf of the battery?
(c) Find the current through both R2 and the 10.0-Ω resistor.
(d) Calculate the total electrical power consumption in all the resistors and the electrical power delivered by the
battery.
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