The permanent magnets in an electric motor lose of their strength.
By how many percent is the torque of the motor decreased?
How many percent would the current to the motor need to be increased to compensate for the loss of torque by the motor?
What is the magnetic field at due to the current A in the wire shown, where cm and cm?
A square loop of wire has a side length of 16.3 cm and consists of 180 turns of wire. The loop is placed in a uniform magnetic field of magnitude 1.40 T, perpendicular to the field’s direction. The wire is supplied with a current of 50.0 A.
What is the magnitude of the maximum torque on the loop?
The current is switched off, and the loop is held at an angle of from the direction of the magnetic field when the current is supplied. What is the magnitude of the maximum torque on the loop when the current is supplied again?