Select the correct figure for fall in voltage -V = - IR;

Option (1):

• Here the current is flowing in the direction of Electromotive Force (Voltage).
• Since the Value of Resistance is not given hence Ohms law cannot be formed.

Option (2):

• Here the current is flowing in the opposite direction of Electromotive Force (Voltage).
• Since the Value of Resistance is not given hence Ohms law cannot be formed.
   

Option (3):

It can be drawn as,

Apply Ohms law,

V = IR

Option (4):

It can be drawn as,

Apply Ohms law,

- V = - IR

Hence, correct option is (4).