Electricity and Voltage

What is voltage?

• The flow of electrons between atoms

• The pressure that pushes free electrons through a circuit

• The measurement of electric current

• The resistance to the flow of electric current

How can voltage be measured?

• Using a voltmeter

• Using an ammeter

• Using an ohmmeter

• Using a wattmeter

What is the difference between direct voltage and alternating voltage?

• Direct voltage flows in one direction, while alternating voltage changes direction periodically

• Direct voltage changes direction periodically, while alternating voltage flows in one direction

• Direct voltage has higher voltage levels than alternating voltage

• Direct voltage is used in homes, while alternating voltage is used in industries

What happens when a circuit has voltage but no current?

• The electrons flow randomly between atoms

• The circuit is not complete

• The voltage is zero

• The circuit is short-circuited

What does the term 'difference of potential' mean?

• The amount of work a circuit can potentially do

• The difference in voltage between two points in a circuit

• The resistance to the flow of electric current

• The measurement of electric current

How is voltage represented in electrical appliances?

• With a number indicating the voltage level

• With a symbol of a V with dots above it

• With a symbol of a V with a horizontal line above it

• With a symbol of a V with a wave above it

What is the unit of measurement for voltage?

• Watts

• Volts

• Amps

• Ohms

How can voltage be measured using a multimeter?

• By connecting the multimeter in series with the circuit

• By connecting the multimeter in parallel with the circuit

• By connecting the multimeter to the ground

• By connecting the multimeter to a power source

What is the voltage in most parts of the world?

• 110-127 volts

• 220-240 volts

• 330-360 volts

• 440-480 volts

Why do different parts of the world have different voltages?

• Due to historical reasons and lack of standardization

• To accommodate different types of electrical appliances

• To reduce energy consumption

• To increase electrical safety