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Current decreases
When voltage remains constant and resistance increases the current in the circuit will reduce.

More information

V=IR

where V is voltage,

I is current and

R is resistance.

From the above equation,

R=V/I, and hence resistance is indirectly proportional to current.

Therefore, an increase in resistance would have the effect of decreased current.

NB: this holds true only as long as the voltage remains constant.

Another opinion

However, this is only true in the case of a circuit connected in series.

When circuits are connected in parallel, the opposite happens. If there is an increase in the amount of resistors in parallel, the total resistance of the circuit then decreases and the current increases subsequently.

Yet another view

No, that's not stated right.

If more resistors are added in parallel - so that the circuit's overall total resistance decreases and its total current increases - that is NOT in any way the opposite of what this question is asking about...

Let's make this crystal clear, so that there is no confusion: "an increase in the amount of resistors" is NOT the same as "an increase in resistance".

So a parallel circuit behaves EXACTLY the same as a series circuit: if its overall resistance increases, the overall current going through the parallel circuit decreases AND if its overall resistance decreases, the overall current going through the parallel circuit increases.

Actually, the second opinion is correct

In a parallel circuit, there are more branches to allow electrons back to the power supply, so current increases. With more resistors in a circuit, the overall resistance in a parallel circuit DECREASES.

In a series circuit, current is the same throughout. So if more resistors are added, resistance INCREASES and so current DECREASES.

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Angus Koepp

Lvl 10
3y ago

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