Two copper wires A and B have the same length and are connectedacross the same battery. If RB = 2RA, find (a) the ratio oftheir cross - sectional areas, AB /AA, (b) the ratio of their resistivities,ρB /ρA, and (c) the ratio of the currents in each wire, IB /IA.
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.
Two copper wires A and B have the same length and are connected
across the same battery. If RB = 2RA, find (a) the ratio of
their cross - sectional areas, AB /AA, (b) the ratio of their resistivities,
ρB /ρA, and (c) the ratio of the currents in each wire, IB /IA.
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