Answer: 4 A
Explanation:
Given
Voltage 
Power 
Power is given by 
Insert the values

The rating of fuse is slightly higher than the normal operating conditions. Therefore, a 4 A fuse should be used here.
Answer:
Electric field points in the direction of the force experienced by a positive charge. Magnetic field points in the direction of the force experienced by a north pole.
The split leap. I'm not a ballerina but I'm pretty sure
The amount of energy is ALWAYS conserved based on the law of conservation of energy. Therefore, the amount of energy will remain the same.
Answer:
v = 134.06 m/s
Explanation:
Given that,
Radius of a circular track is 1,835 m
Time required to complete one lap around a perfectly circular track is 86 seconds
We need to find the car's velocity. Velocity is equal to,
v=d/t
On circular path,

So, car's velocity is 134.06 m/s.