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Transcript
FACTORS THAT AFFECT THE CHARGING TIME OF A CAPACITOR
Increasing the value of the capacitor ______________ the time taken to
charge.
Decreasing the value of the capacitor ______________ the time taken to
charge.
Increasing the value of R decreases the ______________ in the circuit and
hence the time taken to charge the capacitor ______________.
Decreasing the value of R increases the _____________ in the circuit and
hence the time taken to charge the capacitor _____________.
 Progressive Problems in SG Physics
Electronics Section 3
Capacitor circuits
Page 79/80/81
Questions 1 – 7
 OR Textbook questions p121,122
 & P&N HW book 1-6 +15&16
 & Yellow problem book p46-49
read Textbook on Potentiometers and copy and complete
this section
POTENTIOMETER
This is a type of voltage divider. It consists of one long resistor (usually a
wound wire) and a sliding contact.
As the sliding contact C is moved up the potentiometer towards A the
resistance between B and C __________________ and hence the voltage
across B and C will _____________________ .
At the same time, the resistance between A and C will
__________________ and so hence the voltage across A and
____________________.
Read Pages 117-120 of SG Physics textbook
Voltage divider with a thermistor
Voltage divider with and LDR
Voltage divider with a capacitor
Voltage divider with a potentiometer
Voltage divider with a switch
Read the section on Output devises in the textbook and make notes including
circuit diagrams where appropriate. Complete problems p112