Homework #2
... The negative sign in both equations indicates that the E field points downward. Use these two equations for electric field to determine the potential difference (in volts) between the ground and 30 km altitude. ...
... The negative sign in both equations indicates that the E field points downward. Use these two equations for electric field to determine the potential difference (in volts) between the ground and 30 km altitude. ...
DC Motors
... The wire loops on the armature are connected through slip rings and brushes so that current flow in the wire loops keeps reversing forcing the armature to rotate to line up with the electromagnetic field ...
... The wire loops on the armature are connected through slip rings and brushes so that current flow in the wire loops keeps reversing forcing the armature to rotate to line up with the electromagnetic field ...
Lecture 12
... inverted electric generator. The current is the input (rather than the output), and the rotary motion is the output (rather than the input). As a result, it is possible to switch an electric motor from consuming electric power to producing power. This process is called regenerative braking. It conve ...
... inverted electric generator. The current is the input (rather than the output), and the rotary motion is the output (rather than the input). As a result, it is possible to switch an electric motor from consuming electric power to producing power. This process is called regenerative braking. It conve ...
