Question

6ohm and 12ohm resistors are connected in parallel. this combination is connected in series witha 10V battery and 6ohn resistor. what is the potential difference btw the therminal of 12ohm resistors? a) 4v b) 16v c) 2v d) 8v​

Answer 1

Answer:

4v

Explanation:

resistors connected in parallel: 6ohm and 12 ohm

1/RP= R1×R2/R1+R2

I/RP= 6×12/6+12=72/18= 4 ohm

Now connect the 4 ohm resistors and 6 ohm resistors in series connection

RS= R1+R2

RS= 4+6=10 ohm

Since we need to find potential difference we have to find current flowing in the connection

v=10 volt, R= 10 ohm

I = V/R

I = 10/10=1A

I is inversely proportional to R

I 12 = 6/12+6= 6/18=1/3

V= RI

V= 12×1/3= 4volt