Top !free! | F2 Science Electricity Exercise
R=6V1.5A=4Ωcap R equals the fraction with numerator 6 V and denominator 1.5 A end-fraction equals 4 space cap omega Answer: The resistance of one bulb is . 5. Summary Study Tips for Success Draw the triangles: Use the
– Only electrons move during friction. Gaining electrons gives an object a negative charge.
Determine the total current flowing through the circuit. (c) Find the voltage drop across the resistor ( R1cap R sub 1 Question 2: Parallel Circuits
resistor on the bottom branch. Close the loop back to the source. Calculate Effective Resistance ( f2 science electricity exercise top
): The rate of flow of electric charge. Measured in using an ammeter. Voltage (
A) V = I + R B) V = I × R C) V = R / I D) V = I – R
: An electromagnetic switch that "trips" to open the circuit during a fault. 4. Energy & Materials : Electrical energy right arrow Kinetic (Mechanical) energy. : Copper is a (allows flow), while plastic is an (prevents electric shock). Final Summary Gaining electrons gives an object a negative charge
Electricity only flows in a closed circuit . An open switch or broken wire creates an open circuit.
| Feature | Series Circuit | Parallel Circuit | | :--- | :--- | :--- | | | Only one path for current. | Multiple paths for current. | | Current | Same everywhere ($I_1 = I_2$). | Splits up at branches. | | Voltage | Splits across components. | Same across each branch. | | Switch | One switch controls all. | Switches control individual branches. | | If one bulb blows | All bulbs go out. | Other bulbs stay on. |
A fuse should be connected in series with an appliance for safety. Insulators have very high resistance. Part 2: Multiple Choice Close the loop back to the source
1. Voltmeter, 2. 2Ω, 3. Open.
(5 marks)
Static electricity is the build-up of an electric charge on the surface of an object. Understanding how charges behave is the first step to mastering electricity.
