Two wires a and b with same dimension of 50 cm length and 0.5 cm radius are used to study
the effect of magnetic field, b. wire a is bent to form a 2 turns circular coil while wire b into
10 turns solenoid. both wires are supplied with a 5 a current,
i) which wire will produce a higher magnetic field at the centre?
ii) sketch the patterns of the magnetic field for both wires.
iii) suggest 2 changes that you can make to wire a so that its magnetic field is equal to wire
b.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction