UNIT 21.1 Generating Electricity

The process of generating the current in a conductor is called as 

• Electro motive force 
• Electromagnetic induction 
• generator energy conversion 
• induced voltage

AC generators have 

• 2 slip rings 
• 1 slip ring 
• 3 slip rings 
• 4 slip rings

Which ONE of the following actions will NOT cause an increase in the induced emf in a coil if the coil is rotated in a uniform magnetic field?

• Rotating the coil faster

• Increasing the strength of the magnetic field

• Increasing the number of turns of the coil

• Replacing the coil with a coil of lower resistance

Generators are devices that convert _____ energy into _____ energy. Which of the following options correctly completes the statement?

• chemical; mechanical

• mechanical; electrical

• electrical; mechanical

• potential; kinetic

Which device can Lily, William, and Oliver use to convert mechanical energy into electrical energy?

• Electric Motor

• Magnet

• Generator

• Solar Cell

What type of energy comes OUT of a generator?

• Mechanical
• Electrical
• Thermal
• Potential

What happens to the strength of an electromagnet as you add more coils around it? Which of the following happens when Charlotte, Grace, and Aiden work together to add more coils?

• Increases

• Decreases

• Stays the same

• Stops completely

What happens when Isla moves a wire between the poles of a magnet?

• A. a ferromagnet

• B. a solenoid

• C. an electromagnet

• D. an electric current

According to the Right Hand Rule, where is the magnetic field generated around a current-carrying wire?

• Perpendicular to the wire
• Parallel to the wire

What can cause a magnet to lose its superpowers?

• A. high altitudes

• B. high temperatures

• C. low altitudes 

• D. low temperatures