HARD
Upper Secondary: IGCSE
IMPORTANT
Earn 100
Draw the circuit symbols and write the truth table for the NAND logic gate.
Important Questions on Electric Circuits
EASY
Upper Secondary: IGCSE
IMPORTANT
a) Draw the circuit symbol for a resistor.
b) Draw the circuit symbol for a variable resistor.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
a) What does LDR stands for?
b) Draw its circuit symbol.
c) What happens to the resistance of an LDR when light is shone on it?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
a) Draw the circuit symbol for a thermistor.
b) Give one use for a thermistor.
c) Explain why a thermistor is suitable for this use.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Redraw the circuit shown below by including a light-dependent resistor in place of the thermistor.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Explain why the bell would be silent when the LDR is in darkness.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 19 - Electric Circuits>End-of-chapter questions>Q 5
Draw the circuit symbols and write the truth table for the NOR logic gate.MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 19 - Electric Circuits>End-of-chapter questions>Q 6
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
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 19 - Electric Circuits>End-of-chapter questions>Q 7
Draw the circuit symbol for the resistor.
