In what type of circuit will the equivalent resistance be less than the resistors in the circuit?

Parallel circuit

Explanation:

When components are connected in parallel, the voltage across each component is same and different current flows in each path depending upon the resistance of the component. The equivalent resistance of the circuit is less than the individual resistances.

Let there be two resistors connected in parallel R and R' connected across voltage source V.

Current through R is I and through R' is I'

Net current in the circuit:

I'' = I +I'

From Ohm's law, V = I R

V/R'' = V/R + V/R'

Where R" is the equivalent resistance of the circuit

1/R" =1/R + 1/R'

Thus, the equivalent resistance of a parallel circuit is less than the individual resistances.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach