WorksheetsEdexcel iGCSE Electric Circuits
Total questions: 20
Worksheet time: 18mins
1. The heating element of a kettle has a potential difference of 230V. If 138kJ of energy is transferred to boil some water, calculate the total amount of charge that flows through the kettle.
Answer (a) (give value without unit)
1b. Give the unit for the numerical answer to Q1.
(a)
2. What is the correct relationship between current, charge and time
Q =tI
I=Qt
t =IQ
I =Qt
3. Calculate the current through a resistor when a charge of 630C flows in 3 minutes.
Answer = (a) A
4. The direction of flow of positive charge from the positive terminal of a cell to the negative terminal is called (a) current.
Draw a circuit diagram to show how you would obtain an IV characteristic for a bulb.
This is the current characteristic graph for which component.
Filament lamp
Non-ohmic resistor
Diode
Ohmic resistor
Ohmic resistors have a constant value of resistance as long as their (a) remains constant.
Explain the shape of this IV characteristic and state which component it belongs to.
Which equation correctly describes the relationship between resistance, current and voltage.
V = RI
R = IV
I =VR
R = IV
Calculate the resistance of a thermistor where the voltage reading across it is 13.2V and the current through the sensor = 2.6mA. Give the final answer to 3 s.f.
Answer = (a) Ω
What is the same at all points in series?
Current
Voltage
Resistance
Power
In a Parallel Circuit, How much of the current is returned to the source
None of it
All of it
Half of it
More than went out
What type of circuit is this?
Series
Parallel
Combination
What type of circuit is this?
Series
Parallel
Combination
If one part of the circuit fails, the other parts still work.
