Question

in the circuit given below five resisstors R1,R2,R3,R4 and R5 are connected with a cell of 10 volt what current flows through R3

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Answer 1

Answer:

V=12V

R1, R2 and R3  are connected in parallel.

(a) Current through R1 = V/R1 = 12/5 = 2.4 A

 Current through R2 = V/R2 = 12/10 = 1.2 A

 Current through R3 = V/R2 = 12/30 = 0.4 A

(b) Total current in the circuit = 2.4 + 1.2 + 0.4 = 4 A

(c)  Total resistance in the circuit=R

 1/R = 1/R1+ 1/R2 + 1/R

 1/R = 1/5 + 1/10 + 1/30            

 1/R = 10/30

 R = 3 ohm

Explanation: