Question

Prove 1/rp=1/R1+1/R2+1/R3 in parallel connection of resistance.

Answer 1

Answer:

ammeter reading when connected to ina series to the circuit I=I1+I2+I3

voltmeter reading must be constant V=IR

I1=V/R1

I2=V/R2

I3=V/R3

on adding the three equation

I1+I2+I3=V/R1+V/R2+V/R3

I= v[1/R1+1/R2+1/R3]

I/V=". "

SO R=1/R1+1/R2+1/R3. V/I=R

Answer 2

Answer:

ammeter reading when connected to ina series to the circuit I=I1+I2+I3

voltmeter reading must be constant V=IR

I1=V/R1

I2=V/R2

I3=V/R3

on adding the three equation

I1+I2+I3=V/R1+V/R2+V/R3

I= v[1/R1+1/R2+1/R3]

I/V=". "

SO R=1/R1+1/R2+1/R3. V/I=R

Explanation: