Question

When a resistor is wired in a single loop with a battery, the current through the resistor is I.What is the current through the circuit if you wire three more identical resistors in paraliel with the first one? 041 o (1/3)1 O It is the same (). O 31 Resistors R-22 and R47 ar wred in parallel with a battery of volkage V - 12.0 v. R is now replaced by a wire. What is the current through R O 0.23 A 3.1 A 0.55 A

Answer 1

As we know from ohm's law  

Resistance is inversely proportional to current

On arranging the resistances in parallel the net resistance decreases by factor of r, and hence current increased by the same factor,

The new current is I' = 4 I

Option (a) is correct

========

Since the circuit is now get short, so all the current by passed through the new wire and hence no value of current is being observed through R1.

Option ( c) is correct  

========

Do comment in case any doubt, will reply for sure.. Goodluck