B/A Level Quizizz Review

What statement explains why generators produce alternating current

• Generators do NOT produce alternating current

• When the magnet (or coil) rotates a half turn the direction of the current changes because the magnetic field orientation is reversed as well

• When the magnet (or coil) rotates within a generators, the current produced is unpredictable making it more like alternating current

Which of the following are Step UP transformers? (Select all that apply)

• 50 turns in Primary; 40 Turns in Secondary

• 40 Turns in Primary; 50 Turns in secondary

• Converts 120 V alternating current to 12 V alternating current

A ________ transformer is used near homes to achieve a voltage of 120 V.

• Step Up

• Step Down

• Primary Coil

• Secondary Coil

A typical home outlet supplies what voltage?

• 120 V

• 120 Hz

• 240 V

• 60 Hz

Which of the following is a step up transformer?

• 
• 

Which of the following scenarios would result in an attractive force? Select all that apply

• 
• 
• 

Which of the following can be used to increase the strength of an electromagnet?

• Reduce the number of Coils

• Increase the number of coils

• Reduce the voltage Source

• Increase the resistance

Which of the following will NOT increase the strength of an electromagnet? (select all that apply)

• Adding an iron core

• Adding an Aluminum Core

• Increasing the number of coils

• Increasing the current through the wire

Which device converts electrical energy into mechanical energy?

• Transformer

• Electric Motor

• Generator

• Resistor

True or False: An electromagnet is a permanent magnet

• True

• False