Round 1

Multiple Choice

1) What is the formula for calculating electrical power in a circuit?

• P = V / I
• P = I / V
• P = V * I
• P = V + I

Multiple Choice

2)Which of the following according to KVL must be zero?

• Total current in a closed loop
• Resistance in a closed loop
• Power in a closed loop
• Total voltage in a closed loop

Multiple Choice

3) In a practical application,battery voltage

• Using a voltmeter or a multimeter to measure the battery voltage.
• Shaking the battery to estimate the voltage.
• Counting the number of cells in the battery to determine the voltage.
• Using a thermometer to measure the battery voltage.

Multiple Choice

4) what does the CRT Oscilloscope display?

• Temperature of a circuit
• Pressure of a gas
• Density of a liquid
• Waveform of an electrical signal

Multiple Choice

5) The barrier potential across each silicon depletion layer is

• 1.2V
• 0.5V
• 0.7V
• 1.0V