7408/1 Physics Jun 2020 Quiz | AQA A Level MCQ
AQA
A Level
Physics (7408)
شهریور
2020
مشاهده نمونه سوال
شامل مباحث:
تعداد سوالات: 25
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
25 دقیقه

پیش نمایش صفحه اول فایل
Four positive charges are fixed at the corners of a square as shown.
The total potential at the centre of the square, a distance d from each charge, $\frac{\text{5Q}}{\text{4πε$_0$d}}$ is.
Three of the charges have a charge of +Q.
What is the magnitude of the fourth charge?