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PHYSICS 1 > Electrical Circuits > Flashcards

Electrical Circuits Flashcards

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1
Q

Any path along which current and electrons can flow.

A

Electrical circuits

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2
Q

The maximum potential difference across
the terminals is provided and maintained by the_________-. This maximum potential difference is usually indicated on batteries.

A

Electromotive force

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3
Q

Two or more loads are linked across a single loop of wire.
Components are connected end to end.

A

Series circuit

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4
Q

The same current flows through all components. Theoretically, the current across a ______ circuit has the same value

A

series

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5
Q

Voltage across each component is the same in a _____ circuit

A

parallel

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5
Q

➔ Different loads are situated on
different wire loops
➔ Components are connected
across the same voltage source.

A

Parallel Circuit

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6
Q

Supplies power to the electric circuit.

A

Battery

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7
Q

Connects other components; act as conductors for electric current to flow in the circuit.

A

Connecting wires

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8
Q

Impede the flow of electric current.

A

Resistance

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9
Q

➔ Any component or device that consumes electrical power.
➔ It converts electrical energy into other forms of energy, such as light, heat, or mechanical motion.

A

Load

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10
Q

A material’s tendency to resist the flow of electric charges.

A

Resistance

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10
Q

The difference in potential energy between two points in the electric circuit.

A

Voltage

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11
Q

The presence and flow of electric charges.

A

Electricity

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12
Q

➔ Any material that allows electricity current to pass through.
➔ E.g. copper, aluminim, steel

A

Conductor

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13
Q

➔ Any material that does not allow electricity currents to pass through
➔ E.g. plastic, rubber, glass, cloth, wood

A

Insulator

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14
Q

Defined as the electric potential produced by either electrochemical cell or by changing the magnetic field

A

Electromotive force (EMF)

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15
Q

The energy change in a ____ reflects the conversion of stored chemical energy into electrical energy, without violating the principle of conservation of energy

A

battery

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16
Q

energy is neither created nor destroyed.

A

Law of conservation of energy

16
Q

Potential difference formulae

A

V = E/Q and 1V = 1J/C

17
Q

➔ A flow of charged particles or current
➔ Current in a metal is due to the movement
of electrons

A

Electric current

18
Q

Current is measured using a/an ______

A

Ammeter

19
Q

Ampere

A

A = C/s

20
Q

_________ is present in any medium
that allows charged particles to move, enabling the transfer of electrical energy.

A

Electrical current

21
Q

______ is the flow of electric charge assumed to move from the positive terminal to the negative terminal of a power source.

A

Conventional current

22
Q

the flow of electric charge assumed to move from the negative terminal to the positive terminal.

A

Direct current

22
Q

the flow of electric charge that periodically reverses direction.

A

Alternating current

22
Q

The opposition to the flow of the current

A

resistance

23
Q

If the length of the conductor increases, the resistance will (increase/decrease)

A

Increase

A longer conductor provides more opportunity for collisions between electrons and atoms, impeding flow.

23
Q

The larger the cross sectional area, the resistance will (increase/decrease)

A

Decrease

24
Q

Metals have (high/low) resistance

A

Low

25
Q

Insulators (like rubber) have (high/low) resistance

A

High due to their atomic structure

26
Q

Property of conductor due to which it offers resistance to the flow of current through it.

A

Resistivity (P)

27
Q

The better the conductor the (higher/lesser) resistance

A

lesser

28
Q

SI unit for Resistivity

A

ohm-meter

29
Q

Component that limits or regulates flow of electrical current in an electronic circuit

A

Resistor

30
Q

First color band of a resistor represents…

A

First digit

31
Q

Second color band of a resistor represents…

A

Second digit

32
Q

Third color band of a resistor represents…

A

Multiplier

33
Q

Fourth color band of a resistor represents…

A

Tolerance

34
Q

The higher the electrical potential difference or voltage between two points in a circuit, the more charges can move between these points

A

Ohm’s law

35
Q

Energy per unit time

A

Power (Watt)

36
Q

The power times the number of hours is
the energy consumed per

A

kilowatt-hour

37
Q

Unit used in electrical energy costs

A

kilowatt hour (kWh)

38
Q

If temperature increases, resistance will (Increase/decrease)

A

Increase
Higher temperatures cause increased atomic vibrations, which obstruct the flow of electrons, leading to higher resistance

PHYSICS 1 (2 decks)

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