Evaluating Internal Resistance in Circuits (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What effect does internal resistance have on a battery's terminal voltage when current flows?
What effect does internal resistance have on a battery's terminal voltage when current flows?
Makes it less than the emf
When does the terminal voltage of a battery equal its emf?
When does the terminal voltage of a battery equal its emf?
When no current flows ()
In the formula , what does represent?
In the formula , what does represent?
Voltage drop across internal resistance
Which formula calculates power dissipated by internal resistance?
Which formula calculates power dissipated by internal resistance?
How should internal resistance be treated when solving circuit problems?
How should internal resistance be treated when solving circuit problems?
As a resistor in series with emf source
A battery has Ω. Current is A. What is the voltage drop across ?
A battery has Ω. Current is A. What is the voltage drop across ?
V
With terminal voltage V, current A, and Ω, what is the emf?
With terminal voltage V, current A, and Ω, what is the emf?
V
Two resistors ( Ω and Ω) in parallel give what equivalent resistance?
Two resistors ( Ω and Ω) in parallel give what equivalent resistance?
Ω
What happens to terminal voltage when current through internal resistance increases?
What happens to terminal voltage when current through internal resistance increases?
It decreases