Sec 2 Revision Electrical system 1

What are the two main sources of electrical energy?

• Fossil fuels and electric cells
• Solar energy and electric cells
• Wind energy and Fossil fuels
• Biomass and electric cells

Conventional current flow from ......................... terminal to ......................... terminal.

• Positive, negative
• negative positive 
• positive, positive 
• negative, negative

Electron flow from ......................... terminal to ......................... terminal.

• Positive, negative
• negative positive 
• positive, positive 
• negative, negative

What is the S.I unit for current?

• Ampere (A)
• Volt (V)
• Ohm (Ω)

Which of the following is used to measure current?

• Ammeter 
• Voltmeter 

Ammeter must be connected in ...................... to the component.

• Series
• Parallel 

What is the S.I unit for potential difference?

• Ampere (A)
• Volt (V)
• Ohm (Ω)

Which of the following is used to measure potential difference?

• Ammeter 
• Voltmeter 

Voltmeter must be connected in ...................... to the component.

• Series
• Parallel 

What is the S.I unit for resistance?

• Ampere (A)
• Volt (V)
• Ohm (Ω)