HARD
Upper Secondary: IGCSE
IMPORTANT
Earn 100
Copy the table and complete it by adding names and symbols of the devices described.
Name of the device
Circuit symbol
Description
Resistance decreases when light falls on it.
Resistance changes when temperature changes.
An electromagnetic switch.
Important Questions on Electric Circuits
HARD
Upper Secondary: IGCSE
IMPORTANT
Draw the circuit symbols and write the truth table for the NOT logic gate.
HARD
Upper Secondary: IGCSE
IMPORTANT
Draw the circuit symbols and write the truth table for the AND logic gate.
HARD
Upper Secondary: IGCSE
IMPORTANT
Draw the circuit symbols and write the truth table for the OR logic gate.
HARD
Upper Secondary: IGCSE
IMPORTANT
Draw the circuit symbols and write the truth table for the NAND logic gate.
HARD
Upper Secondary: IGCSE
IMPORTANT
Draw the circuit symbols and write the truth table for the NOR logic gate.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
A fuse can be used to protect an electrical circuit. What problems may arise if a high current flows in a circuit?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
A fuse can be used to protect an electrical circuit. What happens in the fuse when a dangerously high current flows in the circuit?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
A fuse can be used to protect an electrical circuit. What other device could be used to protect a circuit instead of a fuse?
