Energy in circuits (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
ShowHide
Practise the questions
11 questions from this quiz
What formula calculates energy transferred in a circuit?
What formula calculates energy transferred in a circuit?
What is the unit for energy transferred in a circuit?
What is the unit for energy transferred in a circuit?
Joules (J)
What is the unit for time in the energy transfer formula?
What is the unit for time in the energy transfer formula?
Seconds (s)
What increases the energy transferred to a component?
What increases the energy transferred to a component?
Larger current or potential difference
What energy forms does a light bulb transfer electrical energy into?
What energy forms does a light bulb transfer electrical energy into?
Light and thermal energy
What generates heat in circuits when current flows?
What generates heat in circuits when current flows?
Resistance
How does higher current affect energy transfer to heat?
How does higher current affect energy transfer to heat?
More energy transferred to heat
What happens to resistance when a circuit is heated?
What happens to resistance when a circuit is heated?
Resistance increases
Why does heating reduce circuit efficiency?
Why does heating reduce circuit efficiency?
Less energy goes to useful stores
How do toasters use the heating effect of current?
How do toasters use the heating effect of current?
High resistance wire heats to cook
How do fuses protect circuits?
How do fuses protect circuits?
Melt and break circuit if current too high