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Basic Electricity > Basic Electricity > Flashcards

Basic Electricity Flashcards

1
Q

What is an active element?

A

delivers energy

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2
Q

What is a passive element?

A

dissipates, stores or allows the transfer of energy

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3
Q

How does a battery work?

A

transforms chemical energy into electrical energy

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4
Q

What are examples of active elements?

A

Battery, power supply

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5
Q

What are examples of passive elements?

A

resistors, relays, capacitors, inductors, diodes

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6
Q

Resistors dissipate __________ in the form of ________.

A

dissipate energy in the form of heat

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7
Q

Inductors store ____________ in the form of _______________.

A

store energy in the form of magnetic field

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8
Q

Capacitors store _____________ in the form of __________________.

A

store energy in the form of electrical field.

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9
Q

What is energy and how is it measured?

A

Energy is the ability to transform one kind of energy into another and it is measured in Joules (J)

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10
Q

Energy requires what 3 things?

A

potential energy source
conductive path
charged particles

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11
Q

What are 2 electric sources?

A

DC and AC

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12
Q

Protons =
Neutrons =
Electrons =

A

protons = positive charge
neutrons = no charge
electrons = negative charge

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13
Q

The nucleus is formed from what 2 things?

A

Protons and Neutrons

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14
Q

A grounded circuit is also referred to as a _____________.

A

A short circuit

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15
Q

How do transformers work?

A

they receive electricity at a particular voltage and “transforms”it into another voltage

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16
Q

Transformers use two coils:

A

Primary = Input
Secondary = Output

17
Q

What do Ns and Np mean?

A

Ns = numbers of turns secondary winding
Np= number of turns primary winding

18
Q

What is a relay and how does it work?

A

relays are control devices that control the operation of devices using high voltages or currents

Basic Electricity (1 decks)

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