Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

Whats the difference between TERMINAL P.D. and normal P.D.? watch

    • Thread Starter

    Can someone please explain the potential difference... KEK. jk
    Whats the difference between P.D. and terminal P.D.
    • Thread Starter


    Potential difference is defined as the difference in electrical potential between two points.
    As V=E/Q, it is the work done per coulomb of charge. There is a potential difference across a component in a circuit as some work is done as it passes through it.

    Terminal potential difference is the difference in electrical potential across the terminals of a battery.
    In a battery, chemical reactions occur to provide energy for current to flow from the negative to the positive terminals. So this chemical energy is transferred to each unit of charge as electrical energy. This electrical energy supplied by the battery is the electromotive force. As it the coulombs of charge pass through the battery work is done to the battery's internal resistance. This causes a potential drop.
    Terminal pd= electromotive force minus potential difference across the internal resistance.

    lol i hope my explanation is okay. my knowledge of electricity is a bit dodgy.
    Terminal pd is I guess a form of pd, instead of between two points in say a circuit, it is the difference in potential across the postive & negative terminals of a battery.
Have you ever experienced racism/sexism at uni?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni


Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.