Question

10V battery is connected ina electric circuit between A and B points 20 Ampere and 30 Ampere resistors connected to get least resistance in the circuit. Find the resultant resistance between A and B and and find the current in the circuit

Answer 1

Explanation:

Given :

R1 = 20 ohms ( I think you wrote 'amperes' for denoting resistance by mistake)

R2 = 30 ohms

To get minimum net resistance in the circuit, we connect the resistors in parallel.

Resultant resistance in parallel = [ 1/R1 + 1/R2 ]^-1

= [ 1/20 + 1/30 ]^-1

= [ 5/60 ]^-1

= 60/5

= 12 ohms

Current in the circuit = V/R

= 10 / 12

= 0.833A