13Medium
0/4

An industrial heater uses a transformer to provide a high current to a heating element.

Figure 1 shows a schematic diagram of this transformer system.

A schematic of a step-down transformer containing a rectangular iron core. On the left is the primary coil with 800 turns, which is connected to a mains a.c. power supply. On the right is the secondary coil with 16 turns, which is connected to a heating element. Next to the heating element, the text reads: Power output = 480 W, and potential difference across secondary coil = 4.8 V.

Calculate the current from the mains power supply needed to provide this power output.

Assume the transformer is 100% efficient.

[4]

Induced potential, transformers and the National Grid (physics only) (HT only) Questions

Practise AQA GCSE Physics Induced potential, transformers and the National Grid (physics only) (HT only) with exam-style questions for Foundation and Higher tier. 15 questions covering Induced potential (HT only), Uses of the generator effect (HT only), Microphones (HT only), and Transformers (HT only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

PreviousNext

Induced potential, transformers and the National Grid (physics only) (HT only) Questions

  1. GCSE
  2. /Physics
  3. /Induced potential, transformers and the National Grid (physics only) (HT only)