4 Electricity and magnetism

Practice questions on Electricity and magnetism

• A student wraps a coil of wire around a soft iron core and connects it to a battery to mak… (4 marks, Explain)
• An electromagnet is used in a scrapyard to lift pieces of scrap iron. Explain why an elect… (4 marks, Explain)
• A student uses a hairdryer at home. The hairdryer is connected to the mains supply using a… (4 marks, Explain)
• A student uses a cell to drive a current through a resistor. Describe the difference betwe… (4 marks, Describe)
• A filament lamp and a fixed resistor are connected in series with a battery. Describe how … (4 marks, Describe and Explain)
• A student connects an ammeter and a voltmeter to measure the current through a resistor an… (4 marks, State and Explain)
• A student connects a battery to a resistor in a circuit. Explain the difference between th… (4 marks, Explain)
• State what is meant by 'conventional current' and explain why the direction of conventiona… (4 marks, State and Explain)
• Describe how iron filings and a plotting compass can each be used to show the direction of… (4 marks, Describe)
• A steel paper clip and a soft iron nail are both held near the north pole of a bar magnet.… (4 marks, Describe and explain)
• Explain why an electromagnet is more suitable than a permanent magnet for use in a scrapya… (4 marks, Explain)
• A student wants to magnetise a steel rod and a soft iron rod using the stroking method. Af… (4 marks, Describe and explain)
• State two differences between a permanent magnet and a temporary (induced) magnet, and for… (4 marks, State)
• A student connects a battery to a resistor and measures the potential difference across th… (4 marks, State and Explain)
• Explain why a digital ammeter is more suitable than an analogue ammeter when measuring a v… (4 marks, Explain)
• A voltmeter is connected in parallel with a filament lamp in a circuit. As the lamp gets b… (4 marks, Explain)
• Two identical lamps are connected in parallel with each other and then connected to a batt… (4 marks, Explain)
• A battery is connected to two resistors in series. State what is meant by 'electromotive f… (4 marks, State and Explain)
• State the purpose of a fuse in a household electrical circuit and explain what happens ins… (4 marks, Explain)
• A washing machine is connected to the mains electricity supply using a three-core cable. T… (4 marks, Explain)