Eduqas A-Level Electronics Circuit fundamentals overview quiz quiz

The total energy in the circuit

The total power dissipated

Electric charge

The voltage across the junction

$3.0\ \text{k}\Omega$

$1.0\ \text{k}\Omega$

$500\ \Omega$

$333\ \Omega$

It decreases

It increases

It stays constant

It becomes negative

By measuring the open-circuit voltage at the output terminals with all of the independent sources still left switched on in the network

By replacing voltage sources with shorts (and current sources with opens) and finding the resistance into the terminals

By simply adding the value of the load resistance to the internal source resistance of the network

By dividing the measured Thevenin voltage by the current that flows through the load resistor

$R_L \gg R_\text{Th}$

$R_L \ll R_\text{Th}$

$R_L = R_\text{Th}$

$R_L = 0$

$2.2 \times 10^{-3}\ \text{J}$

$1.1\ \text{J}$

$2.2\ \text{J}$

$1.1 \times 10^{-2}\ \text{J}$

Their capacitances add: $C = C_1 + C_2$

By reciprocals: $\frac{1}{C} = \frac{1}{C_1} + \frac{1}{C_2}$

The total equals the smallest capacitor

The total is always zero

50%

37%

63%

10%

$10\ \text{V}$

$5.0\ \text{V}$

$7.1\ \text{V}$

$14.1\ \text{V}$

It increases in direct proportion to the signal frequency

It stays completely constant at every frequency

It first rises and then falls again as frequency rises

It decreases (inversely proportional to frequency)

Across the capacitor

Across the series resistor of the filter

Across the supply rails of the circuit

Across an inductor placed in the circuit

$20\ \text{dB}$

$40\ \text{dB}$

$100\ \text{dB}$

$10\ \text{dB}$