Electricity and Oscilloscope Basics Quiz

What is the declared value of Mains Voltage in the UK?

• 110 V

• 230 V

• 240 V

• 120 V

What does Y-gain control on an oscilloscope?

• Time per centimetre

• Voltage per centimetre

• Frequency of an a.c. supply

• Number of waves per second

What does Time-base control on an oscilloscope?

• Voltage per centimetre

• Time per centimetre

• Maximum voltage in an a.c. supply

• Maximum current in an a.c. supply

What is the definition of Period in terms of an oscilloscope trace?

• The time taken for one wave to pass a point.

• The number of waves per second.

• The maximum voltage in an a.c. supply.

• The maximum current in an a.c. supply.

What law states that the voltage across a resistor is directly proportional to the current passing through it?

• Newton's Law

• Ohm’s Law

• Kirchhoff's Law

• Coulomb's Law

What is a series circuit with two or more resistors called, where each resistor receives a share of the supply voltage?

• Wheatstone Bridge

• Potential Divider

• Parallel Circuit

• Series Circuit

In Ohm’s Law, what remains constant for the law to hold true?

• Voltage

• Temperature

• Current

• Resistance

What can power be expressed in terms of?

• Current and voltage

• Current and resistance

• Voltage and resistance

• All of the above

What does the voltage across a voltmeter in a Wheatstone Bridge depend on?

• Current through the resistors

• Voltage across each of the bottom resistors

• Temperature of the resistors

• Length of the resistors

What is the relationship between voltage and current in Ohm’s Law?

• Inversely proportional

• Directly proportional

• No relation

• Exponentially proportional