Life

Why does the current not change through a resistor?

Why does the current not change through a resistor?

Voltage applied to a series circuit is equal to the sum of the individual voltage drops. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor. If the circuit is broken at any point, no current will flow.

How does resistance decrease current?

The atoms in a resistor scatter and absorb the energy from the charge carriers in the current. So some of the average kinetic energy of the current is converted to heat in the resistor, and the current is reduced, compared to if the resistance wasn’t there.

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What happens when current passes through resistance?

When current is passed through a resistor some electrons are blocked and cannot move over and hence energy is released in the form of heat and hence current is decreased. The voltage which the current has will be reduced after the resistor.

Does current decrease with resistance?

Current is inversely proportional to the resistance. A threefold increase in the resistance would cause a threefold decrease in the current.

Does all current flow through the path of least resistance?

In electrical circuits, for example, the current always follows all available paths, and in some simple cases the “path of least resistance” will take up most of the current, but this will not be generally true in even slightly more complicated circuits.

Does resistance change in a series circuit?

In a series circuit, the total resistance across all of the components (the ‘net resistance’) increases as more components are added. The two resistors have the same current through them.

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Do resistors decrease current in a circuit?

The current after a resistor is the exact same as it was before the resistor. If you now add a resistor in series into this circuit – the current of the circuit will be smaller. So yes, the resistor does reduce the current. (But the current flowing into the resistor is still the same as the current flowing out.)

Does increasing resistance mean decreasing current in a circuit?

Increasing resistance does not mean decreasing of current. Resistance used to resist the flow of electrons through the path. Now for series path the voltage gets reduce by increasing the resistance but current remain same. In case of parallel path the current divided but the voltage remain constant…

What is the difference between current and current passing through resistor?

As far as I know current is the amount of charge passing per unit time. When current passes through a resistor, the resistor resists the flow of current so the amount of charge going to the resistor and leaving the resistor is the same (no charge accumulation)

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Why does resistance change with temperature and time?

This could change with temperature, addition of impurities etc. When you have a higher resistance you have lower current . It could be because it has a lower n or smaller time between collisions. When you say less charge or more time you have to look at exactly the situation. Compared to what?

What does the presence of resistance in a battery mean?

Your intuition is telling you that the presence of resistance means the motion of the electrons is “damped” and that therefore some current must be, in some sense, “lost”. The basic sense you have of this is right, but this “loss of current” is balanced by the driving force (the battery). Regarding your first statement: