Electromagnetic Induction
... AC is continuously changing. When values are quoted for a.c. (e.g. 3A a.c.) what it actually means is that this quantity of a.c. generates heat at the same rate as a direct current of 3A would generate ...
... AC is continuously changing. When values are quoted for a.c. (e.g. 3A a.c.) what it actually means is that this quantity of a.c. generates heat at the same rate as a direct current of 3A would generate ...
Static Electricity: Electric Charge & Electric Field
... Every charged object has an "electric field" around it. This means that a charge in that field will feel an electric force. E = F/q the electric field E equals the electric force F divided the charge of the object in the field (called the test charge). By dividing by q, the electric field is essenti ...
... Every charged object has an "electric field" around it. This means that a charge in that field will feel an electric force. E = F/q the electric field E equals the electric force F divided the charge of the object in the field (called the test charge). By dividing by q, the electric field is essenti ...
Stored energy and magnetic actuators
... potential is zero, by definition. 2. Move charges from the reference conductor into free space, thereby creating an electric field and doing work in the process. The work is stored as potential energy in the electric fields. ...
... potential is zero, by definition. 2. Move charges from the reference conductor into free space, thereby creating an electric field and doing work in the process. The work is stored as potential energy in the electric fields. ...
