Out of the following options which one can be used to produce a propagating electromagnetic wave?

1. A stationary charge               

2. A chargeless particle

3. An accelerating charge         

4. A charge moving at constant velocity

Out of the following options which one can be used to produce a propagating electromagnetic wave?

1. A stationary charge

2. A charge-less particle

3. An accelerating charge

4. A charge moving at constant velocity