Assessment

Directions Identify what factors affecting the strength of an electromagnet were described in each sentence. Choose the letter of the correct answer below. Use a separate sheet of paper.

A Number of coil of wire B. Nature of core material

C. Current passing through the core D. Size of the wire

1. Using larger sizes of wire in the call will increase the current and strengthen the magnetic field it produces 2 The lesser current flow through the coil, the weaker the magnetic field im

produces.

3. The more number of turn of wire you apply in the core, the stronger the magnetic field it produces

4. The core used inside the coll increases or decreases the magnetic field it creates

5. Using smaller sizes of wire in the coll will decrease the current and weaken the magnetic field it produces.

6. The lesser number of turn of wire you apply in the core, the weaker them field it produces

7. The more current flow through the coil, the stronger field it produces

8. Iron core help produce strong magnetic field. 9. Metal core help produce weak magnetic field.

10. Using two batteries as source of electricity helps to produce stronges​