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7.3 Producing Electric Current

Authored by Laura Gratz

Science

9th - 12th Grade

NGSS covered

Used 1+ times

7.3 Producing Electric Current
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11 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a form of electromagnetic induction?

producing electric current by moving a magnet through a wire loop

using an electromagnet to measure electric current

producing mechanical energy by sending electric current through an electromagnet

changing electrical energy to mechanical energy that produces sound

Tags

NGSS.HS-PS2-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following devices produces electric current?

  1. generator

  1. stereo speaker

  1. galvanometer

electric motor

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes how electricity is generated for homes?

  1. The spinning of a windmill's blades creates electric current without a generator.

Nuclear reactions produce an electric current inside the reaction chamber.

Steam pushes turbine blades in a generator, which changes the mechanical energy into electrical energy.

Water released from a dam generates electric current, which is transformed into mechanical energy.

Tags

NGSS.HS-PS3-3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following devices can increase or decrease the voltage of an alternating current?

  1. generator

transformer

battery

galvanometer

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do power plants commonly produce alternating current?

  1. It is less hazardous to use than direct current.

Less resistance is created in the wire.

Direct current requires the use of transformers.

The voltage of alternating current can be increased or decreased with a transformer.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The generation of a current by a changing magnetic field is called _____________.

magnetism

electromagnetic induction

an electromagnet

direct current

Tags

NGSS.HS-PS2-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A device that uses electromagnetic induction to transform mechanical energy into electrical energy is a _________________.

electromagnet

magnet

generator

motor

Tags

NGSS.HS-PS3-3

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