The Motor Effect
Ramped Motor Effect Calculation Questions (F=BIL)
These questions will help you practise using the motor effect equation to calculate force, magnetic flux density, current and length of wire in a magnetic field. Read each question carefully, identify the known values and rearrange the equation when necessary before completing your calculation.
Transformers
10 Ramped Questions on How a Transformer Works
Transformers are used to increase or decrease voltage in electrical circuits and play an important role in the National Grid. These ramped questions will help you build your understanding of how transformers work, from the basic components to explaining energy transfer and efficiency.
10 Ramped Transformer Calculation Questions using (Vp / Vs = Np / Ns)
These questions will help you practise using the transformer equation to calculate voltages and numbers of turns in a range of real-life situations. Work carefully through each question, making sure you identify the known values and rearrange the equation correctly when needed.
10 Transformer Power Equation Ramped Questions (Vp × Ip = Vs × Is)
These questions will help you practise using the transformer power equation in a range of real-life situations. Start by identifying the values you know, then rearrange the equation if necessary before carrying out your calculation carefully.
The Physics Question Bank 