Contents
Why do two wires carrying currents in opposite directions repel each other?
The direction of magnetic field on the conductor is determined by Fleming’s right hand rule. Thus, gives us that the direction of magnetic field turns out to be opposite to each other. This results in repulsion of the conductors carrying current in opposite directions relatively and vice versa.
Can current flow in 2 directions?
Current can only flow in one direction. It’s just a question of which node has the higher voltage. The current will always go from the higher potential to the lower. Consider the current as water flowing in a pipe.
Can electricity flow both ways?
No, you cannot have multiple currents flowing in different directions in the same wire because all real wires have resistance. It will lead to inconsistencies with respect to other considerations, such as power dissipation.
Which direction does electricity flow in a battery?
During the discharge of a battery, the current in the circuit flows from the positive to the negative electrode. According to Ohm’s law, this means that the current is proportional to the electric field, which says that current flows from a positive to negative electric potential.
How to wire two separate switches using the same wire?
Pull a 12-gauge cable from the power source, making sure that the power is off and the cable is dead. Feed it through the back of one of the switch boxes and strip the wires. Run a second 12-gauge cable from the first switch to the second one and strip the wires on both ends.
What is the magnetic force between two parallel currents?
(b) A view from above of the two wires shown in (a), with one magnetic field line shown for wire 1. RHR-1 shows that the force between the parallel conductors is attractive when the currents are in the same direction. A similar analysis shows that the force is repulsive between currents in opposite directions.
How big is the current between two parallel wires?
Two long, parallel wires are hung by cords of length 5.0 cm, as shown in the accompanying figure. Each wire has a mass per unit length of 30 g/m, and they carry the same current in opposite directions. What is the current if the cords hang at with respect to the vertical?
Can a switch be mounted in the same electrical box?
It’s possible to mount the switches in the same or in different electrical boxes, but the latter case involves the extra task of running a circuit cable between the boxes. You maintain the continuity of the hot wire in the circuit cable by forming pigtails at the points where it connects to the switches.