# Voltage across parallel resistances

A resistor is connected to a battery of certain potential difference, it has now $$V$$ volt potential difference across its ends, after some time a resistor is connected in parallel with it. How does the potential difference across 1st resistor would change after the addition of 2nd resistor in that way? My physics text book says that potential difference across first would decrease,but according to me it should remains same since they are in parallel. can anyone correct me of i am wrong?

• You are correct but in practice a real battery has internal resistance from all the metal paths or conductors inside the battery. Dec 10 '18 at 14:42