Multiple Choice
Which of the following is the SI unit of electrical current?
11
views
1. Intro to Physics Units
Introduction to Units
Struggling with Physics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Potential difference is measured in which units?
A
B
C
D
Verified step by step guidance1
Understand that potential difference, also known as voltage, is the work done per unit charge to move a charge between two points in an electric field.
Recall the definition of potential difference: \(V = \frac{W}{Q}\), where \(V\) is the potential difference in volts, \(W\) is the work done in joules, and \(Q\) is the charge in coulombs.
Recognize that the unit of work done (\(W\)) is the joule (J), and the unit of charge (\(Q\)) is the coulomb (C).
From the formula, the unit of potential difference is joules per coulomb, which is defined as a volt (V).
Therefore, potential difference is measured in volts (V), not watts (W) or amps (A), which are units of power and current respectively.
1:37mWatch next
Master Introduction to Physics Channel with a bite sized video explanation from Patrick
Start learningRelated Videos
Related Practice
Introduction to Units practice set
Problem sets built by lead tutorsExpert video explanations