Remote control is connected to a stereo by 20 m distance by using copper wire. This copper wire has a resistivity of -8 1.7x10 m. What should be the diameter at the end of the wire if the resistance of wire must be less than 0.10 Ω? b) Figure 4 shows the arrangement of 3 resistors, which are connected to 3 sources: 70 V, 60 V and 80 V i) Using Kirchhoff’s rules, find the current in each resistor shown in Figure 4 ii) Find the potential difference pass through R1 and R2.
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) Remote control is connected to a stereo by 20 m distance by using copper wire. This
copper wire has a resistivity of
-8 1.7x10 m.
What should be the diameter at the end
of the wire if the resistance of wire must be less than 0.10 Ω?
b) Figure 4 shows the arrangement of 3 resistors, which are connected to 3 sources: 70 V,
60 V and 80 V
i) Using Kirchhoff’s rules, find the current in each resistor shown in Figure 4
ii) Find the potential difference pass through R1 and R2.
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