5. Topic 5(COLON) Electricity and DC Circuits
Lesson 5.4: Emf, Internal Resistance And Potential Dividers — Quiz
Test your understanding of lesson 5.4: emf, internal resistance and potential dividers with 5 practice questions.
Practice Questions
Question 1
What is the definition of electromotive force (e.m.f.)?
Question 2
If a cell has an e.m.f. of 12V and an internal resistance of 2Ω, what will be the terminal potential difference (p.d.) when a current of 3A flows?
Question 3
What is the internal resistance of a cell if the e.m.f. is 9V and the terminal potential difference when a 1.5A current is drawn is measured at 7.5V?
Question 4
What does a potential divider do in an electrical circuit?
Question 5
If two resistors, each of 4Ω, are connected in series in a circuit, what is the total resistance?