Question

If two resistors in a parallel circuit have the same values, how do they affect the current?

Answer 1

Suppose,two resistors of resistance `R` is connected to a battery of voltage `V` in parallel combination.

So,their net resistance becomes `(R × R) /(R + R) = R/2` (i.e half the value of individual resistance)

So,current flowing through the circuit is `V/(R/2) = 2 (V/R)`

Now,if they were connected in series,the net resistance would have been `2R` ,so the current in the circuit would have been `V/(2R)`

So,on applying such the value of current is quadrupled w.r.t its series combination.