Booklet 3 - Electricity (Equations) Flashcards

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1
Q

(Define symbols and units)

A

Vpeak - Peak Voltage (V)

Vrms - rms Voltage (V)

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2
Q

(Define symbols and units)

A

Ipeak - Peak Current (V)

Irms - rms Current (V)

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3
Q

(Define symbols and units)

A

Q - charge (C)

I - current (A)

t - time (s)

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4
Q

(Define symbols and units)

A

V - voltage (V)

I - current (A)

R - resistance (Ω)

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5
Q

(Define symbols and units)

A

P - power (W)

V - voltage (V)

I - current (A)

R - resistance (Ω)

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6
Q

RT = R1 + R2 + ….

(What type of circuit does this apply to?

Define symbols and units)

A

This is the formula for resistance in series.

RT - Total Resistance (Ω)

R1 - Resistance 1 (Ω)

R2 - Resistance 2 (Ω)

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7
Q

1/RT = 1/R1 + 1/R2 + ….

(What type of circuit does this apply to?

Define symbols and units)

A

This is the formula for resistance in parallel.

RT - Total Resistance (Ω)

R1 - Resistance 1 (Ω)

R2 - Resistance 2 (Ω)

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8
Q

(Define symbols and units)

A

E - emf (V)

V - terminal potential difference (V)

I - current (A)

r - internal resistance (Ω)

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9
Q

(Define symbols and units)

A

V1 - Voltage across resistor 1 (V)

R1 - Resistance of resistor 1 (Ω)

R2 - Resistance of resistor 2 (Ω)

Vs - Supply Voltage (V)

(NB it doesn’t matter which resistors you choose to call 1 and 2 as long as you are consistent in labelling the voltages in the same way i.e. V1 across R1, V2 across R2)

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10
Q

(Define symbols and units)

A

V1 - Voltage across resistor 1 (V)

V2 - Voltage across resistor 2 (V)

R1 - Resistance of resistor 1 (Ω)

R2 - Resistance of resistor 2 (Ω)

(NB it doesn’t matter which resistors you choose to call 1 and 2 as long as you are consistent in labelling the voltages in the same way i.e. V1 across R1, V2 across R2)

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11
Q

(Define symbols and units)

A

C - capacitance (F)

Q - charge (C)

V - voltage (V)

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12
Q

(Define symbols and units)

A

E - energy (J)

Q - charge (C)

V - voltage (V)

C - capacitance (F)

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