Question

http://prntscr.com/99gvc0

Answer 1

@hartnn
@pooja195

Answer 2

apply Ohms law to the circuit
Ohm's law
V= IR

Answer 3

where R is the total series resistance
I= ammeter reading since ammeter reads current reading

Answer 4

@MatthewPFDS u der?

Answer 5

\[\rm R_T=\frac{ V }{ I }\\ ~ \\~\\~\\~R_T=3 \Omega +R \Omega \]