### Question:

What is the resistance R in the figure?

What is the emf of the battery in the figure?

### Answer 1:

10*2+R*2 = 3*R

R = 20 ohms

V = 3*R = 60V

### Answer 2:

3R= 2 (10 +R)

R = 20 ohms

emf = 60V

What is the resistance R in the figure?

What is the emf of the battery in the figure?

10*2+R*2 = 3*R

R = 20 ohms

V = 3*R = 60V

3R= 2 (10 +R)

R = 20 ohms

emf = 60V