Test 3: Complete Chapter – Concepts, Comparisons and Calculations

Question 1

A D.C motor converts:

• Amechanical energy into electrical energy
• Bmechanical energy into chemical energy
• Celectrical energy into mechanical energy
• Delectrical energy into chemical energy

Question 2

The two main layers of the Earth's core that contribute to the generation of the magnetic field are:

• Acrust and mantle
• Binner core and outer core
• Clithosphere and asthenosphere
• Dtroposphere and stratosphere

Question 3

A 0.5 m wire carries 2 A perpendicular to a 0.4 T magnetic field. The force on it is:

• A0.4 N
• B0.1 N
• C1.6 N
• D4 N

Question 4

A wire carrying current placed parallel to the magnetic field experiences a force of:

• Amaximum value
• Bzero
• Cinfinite value
• Dhalf of maximum

Question 5

A 0.1 m wire carrying 5 A is perpendicular to a 0.2 T field. The force is:

• A0.1 N
• B1 N
• C0.01 N
• D10 N