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Electric Motors (ht Only) (GCSE Physics)

The following is a GCSE Physics test covering 'Electric Motors (ht Only)' from the broader topic Magnetism And Electromagnetism. The test is geared towards the AQA exam board style syllabus.
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What advantage do brushless DC motors have over brushed DC motors?
What component in a simple DC motor reverses the direction of current through the rotating coil every half turn?
Which of the following will reverse the rotation direction of a simple DC motor?
What happens to the direction of the force on a current-carrying wire in a magnetic field if you reverse the current direction?
Which configuration most commonly produces greater torque in a motor of given size?
A student measures the supply to a small DC motor and finds V = 6.0 V and I = 0.50 A. What is the electrical power input to the motor?
What is the unit of magnetic flux density B in the SI system?
A small DC toy motor is rated 1.5 V. It runs from a 3.0 V supply but overheats quickly. Which is the best explanation?
In the equation F = B I L, what does B represent?
In an electric motor, what is the role of the brushes?
A motor’s torque is the turning moment produced. Which factors increase torque for a given motor design?