F2 Science Electricity Exercise Top !!hot!! 〈OFFICIAL 2025〉

A circuit is set up with a 12V battery connected to a resistor. An ammeter in the circuit reads 1.5A. Calculate the resistance of the resistor.

: Defined as the flow of electric charges (specifically free electrons). It flows from the positive terminal negative terminal in a complete circuit. Conditions for Flow : A current can only flow in a closed (complete) circuit Conductors vs. Insulators Conductors

A top-tier science student must look at a circuit diagram and instantly calculate how current and voltage behave. Series Circuit Parallel Circuit Single continuous loop Multiple branches/pathways Current ( ) Same at every point ( Splits across branches ( Voltage ( ) Shared among components ( Same across each branch ( Component Failure One break stops the entire circuit One break only affects that specific branch Top F2 Science Electricity Exercises Test your understanding with these exam-style questions. Section A: Multiple Choice Questions f2 science electricity exercise top

: A resistor with an arrow through it used to adjust current. 2. Series vs. Parallel Circuits

(3 marks) Your phone charger has a label: “Output: 5V, 2A”. A circuit is set up with a 12V

A. The other bulbs will shine brighter. B. The other bulbs will stay lit. C. The circuit is broken and all other bulbs go out. D. The battery will explode.

Analyzing devices where electricity is converted into other forms, such as heat (electric iron/kettle) or light. : Defined as the flow of electric charges

Practice using the formulas V = I × R and P = V × I until they become second nature. Write them on flashcards and test yourself. The key to success in physics is not just knowing the formula, but knowing when to apply it.