Energy in circuits (Edexcel GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What three factors does energy transferred in a circuit depend on?
What three factors does energy transferred in a circuit depend on?
Current, voltage, and time
Which formula calculates energy transferred in a circuit?
Which 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 happens to energy transfer when current or potential difference increases?
What happens to energy transfer when current or potential difference increases?
More energy is transferred
In a light bulb, electrical energy is transferred into which two forms?
In a light bulb, electrical energy is transferred into which two forms?
Light and thermal energy
What always happens when a current flows through circuit components?
What always happens when a current flows through circuit components?
Energy transfers to thermal stores
What generates heat in a circuit?
What generates heat in a circuit?
Resistance in the circuit
What effect does a higher current have on components?
What effect does a higher current have on components?
Transfers more energy and increases temperature
What usually happens to resistance when a circuit is heated?
What usually happens to resistance when a circuit is heated?
Resistance increases
Why does heating reduce efficiency in circuits?
Why does heating reduce efficiency in circuits?
Less energy goes to useful stores
How do fuses protect circuits?
How do fuses protect circuits?
Melts and breaks circuit if current too high
Why do toasters have high resistance wire?
Why do toasters have high resistance wire?
Heats up to transfer energy to bread