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Which of the following statements about resistors is true?

• Resistors increase voltage in a circuit.

• Resistors decrease current in a circuit.

• Resistors store electrical energy.

• Resistors decrease resistance in a circuit.

What is the unit of resistance?

• Ampere
• Ohm
• Volt
• Joule

Each resistor has a tolerance level. What does "tolerance level" is telling us?

• Tolerance level indicates the maximum deviation from the specified resistance value.
• Tolerance level is the color coding of the resistor.
• Tolerance level is the resistance value itself.
• Tolerance level indicates the minimum deviation from the specified resistance value.

What happens to the current flow if the resistance in a circuit increases?

• The current flow decreases
• The current flow remains the same
• The current flow stops completely
• The current flow increases

What is the symbol used to represent a resistor in circuit diagrams?

• C

• V

• R

• L

Which of the following statements about voltage is correct?

• Voltage is the same as resistance in an electrical system.
• Voltage is a measure of current flow in a circuit.
• Voltage is measured in amperes.
• Voltage is the difference in electric potential between two points and is measured in volts.

What does a higher voltage indicate?

• Equal potential difference
• Less potential difference
• Lower current flow
• Greater potential difference

What happens to voltage when resistance in a circuit increases?

• Voltage increases
• Voltage decreases
• Voltage becomes negative
• Voltage remains constant

What does it mean if a battery has a voltage of 9V?

• It can supply 9 amperes of current.

• It can supply 9 joules of enery per second.

• It has a potential difference of 9 volts between its terminals.

• It can power 9 light bulbs simultaneously.

Which of the following statements best describes electric current?

• Electric current is the flow of electric charge through a conductor.
• Electric current is the flow of air through a conductor.
• Electric current is the flow of water through a conductor.
• Electric current is the flow of heat through a conductor.