Electrical Design Formulas Flashcards

(26 cards)

1
Q

Define Ohm’s Law.

A

The relationship between voltage, current, and resistance: V = I * R.

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2
Q

What does V represent in electrical formulas?

A

V represents voltage, measured in volts.

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3
Q

Fill in the blank: Power is calculated as _______ times Voltage.

A

Current

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4
Q

True or false: Resistance is measured in ohms.

A

TRUE

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5
Q

Define current.

A

The flow of electric charge, measured in amperes (A).

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6
Q

What is the formula for power?

A

Power (P) = Voltage (V) * Current (I).

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7
Q

Fill in the blank: The unit of energy is _______.

A

Joule

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8
Q

True or false: Capacitance is measured in farads.

A

TRUE

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9
Q

What does R stand for in electrical formulas?

A

R stands for resistance, measured in ohms.

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10
Q

Define inductance.

A

The property of a conductor to oppose changes in current, measured in henries.

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11
Q

What is the formula for impedance?

A

Impedance (Z) = √(R² + X²), where X is reactance.

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12
Q

Fill in the blank: Voltage is the _______ that drives current through a circuit.

A

Potential difference

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13
Q

True or false: AC stands for alternating current.

A

TRUE

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14
Q

What does P represent in electrical formulas?

A

P represents power, measured in watts.

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15
Q

Define reactance.

A

The opposition to alternating current due to capacitance or inductance.

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16
Q

What is the formula for energy consumption?

A

Energy (E) = Power (P) * Time (t).

17
Q

Fill in the blank: Frequency is measured in _______.

18
Q

True or false: Direct current flows in one direction.

19
Q

What is the unit of electric charge?

20
Q

Define voltage drop.

A

The reduction in voltage in a circuit due to resistance.

21
Q

What is the formula for total resistance in series circuits?

A

Total Resistance (R_total) = R1 + R2 + … + Rn.

22
Q

Fill in the blank: Kirchhoff’s Current Law states that total current entering a junction equals _______.

A

Total current leaving

23
Q

True or false: Watt is a unit of power.

24
Q

What is the formula for total capacitance in parallel circuits?

A

Total Capacitance (C_total) = C1 + C2 + … + Cn.

25
Define **short circuit**.
An unintended path in a circuit that allows current to flow freely.
26
What does **X** represent in the impedance formula?
**X** represents reactance, which can be capacitive or inductive.