* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Intermediate 1/Access 3 Physics
Regenerative circuit wikipedia , lookup
Lumped element model wikipedia , lookup
Index of electronics articles wikipedia , lookup
Wien bridge oscillator wikipedia , lookup
Josephson voltage standard wikipedia , lookup
Power electronics wikipedia , lookup
Negative resistance wikipedia , lookup
Transistor–transistor logic wikipedia , lookup
Galvanometer wikipedia , lookup
Schmitt trigger wikipedia , lookup
Valve RF amplifier wikipedia , lookup
Power MOSFET wikipedia , lookup
Operational amplifier wikipedia , lookup
Two-port network wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Surge protector wikipedia , lookup
Opto-isolator wikipedia , lookup
RLC circuit wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Rectiverter wikipedia , lookup
Current mirror wikipedia , lookup
Current source wikipedia , lookup
BASIC ELECTRICITY REVISION HOMEWORK 1. Draw the circuit symbols for a battery, a lamp and a switch. (use a ruler!) 2. State the energy changes in a battery, a lamp and a heater and a motor. 3. a) Draw a circuit containing a battery, a resistor and a bulb all connected in series. b) Draw a circuit containing one battery connected to two bulbs in parallel. c) Draw a circuit containing two resistors in parallel which are connected to a bulb and a battery in series. 4. a) Describe what is meant by a series circuit. b) Describe what is meant by a parallel circuit. 5. 6. a) Copy out this circuit and show how an ammeter should be connected. b) What would the ammeter be measuring? c) What unit would the ammeter measure in? a) On your diagram in question 5 add a voltmeter to measure the voltage across the resistor. b) What unit would the voltmeter measure in? BASIC ELECTRICITY REVISION HOMEWORK 7. A1 8. A2 a) State the unit for current b) If the current through A1 is 5A, what is the current through A2? c) What is the current from the battery? In the following circuit the supply voltage is 12V. a) If both bulbs are identical, what is the voltage across lamp 1? b) If the current through lamp 1 is 3A, what is the current through lamp 2? lamp 1 9. lamp 2 . a) In this circuit there are 3A going through the resistor and 4A through the bulb. What current is being drawn from the supply. b) If the supply is 12V, what is the voltage across i) the resistor and ii) the bulb? 10. . Complete the following table Current (A) M Supply Lamp Motor Resistor 3A 1.5A Voltage (V) 6V 4V BASIC ELECTRICITY 11. 12. 13. REVISION HOMEWORK 14. Draw the circuit symbols for a resistor and a variable resistor. How is the variable resistor different from an ordinary resistor? If the resistance of a variable resistor is increased, what happens to the current? Give two practical uses of a variable resistor. 13 State the energy changes in a resistor. 14 a) Copy the circuit and add an ammeter and a voltmeter to measure the voltage across the bulb. b) How would you use these readings to calculate resistance of the bulb? 15. a) What meter could you use to measure resistance directly? b) What is the unit of resistance? 16. If the voltage across a bulb is 6V and the current through it is 2A. What is the resistance of the bulb? 17. Current through a resistor is 10A, and the voltage across it is 230V. What is the resistance of the resistor? 18. Voltage across a heater is 12V, if current through the heater is 9.5A, what is its resistance? 19) A student investigates the resistance of a piece of metal using the circuit shown. The student measures the current in the circuit using an ammeter. a) State what additional measurement is required to calculate the resistance of the metal. b) The ammeter is moved to position X. State how the ammeter reading compare the original value. A Metal BASIC ELECTRICITY REVISION HOMEWORK 20) A student sets up an experiment to investigate the current in and the voltage across two different resistors (X and Y). The student uses a battery, an ammeter, a voltmeter and some wires to obtain measurements for each resistor. R Copy and complete the diagram shown above, by labelling the voltmeter and ammeter, to show how the measurements could be obtained. The measurements obtained for each resistor are shown in the table. Use the information in the table to calculate the resistance of resistor Y.