You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
Match the following
|Column A||Column B|
|(a). Human body||(1). electric bell|
|(b). Silk thread||(2). current|
|(c). Charge in motion||(3). conductor|
|(d). soft iron||(4). electromagnet|
|(e) . Electromagnet||(5). insulator|
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.