I=VRtotal=6V6Ω=1Acap I equals the fraction with numerator cap V and denominator cap R sub t o t a l end-sub end-fraction equals the fraction with numerator 6 V and denominator 6 space cap omega end-fraction equals 1 A The ammeter reading is
To score top marks on Form 2 physics-based questions, follow this checklist during your revision: f2 science electricity exercise top
Mastering these questions does more than help you pass a test. It teaches you why your phone charges slower with a weak cable (resistance), why house lights are wired in parallel (so they don't all turn off), and why fuses are important (prevent over-current). | The total current is divided between the
| Feature | Series Circuit | Parallel Circuit | | :--- | :--- | :--- | | | The current is the same everywhere in the circuit. | The total current is divided between the different branches. | | Voltage | The total voltage is shared between the components. | The voltage is the same across each branch. | | Resistance | The total resistance is the sum of all resistances: ( R_t = R_1 + R_2 + R_3 + ... ) | The reciprocal of the total resistance is the sum of the reciprocals: ( \frac1R_t = \frac1R_1 + \frac1R_2 + \frac1R_3 + ... ) | | Component Failure | If one component fails (e.g., a bulb blows), the circuit is broken and all components stop working. | If one branch fails, current continues to flow through the other branches, and they continue to function. | | Switches | A single switch controls the entire circuit. | Multiple switches can control individual branches. | | Brightness | Adding more components in series makes all of them dimmer. | Adding more branches in parallel does not affect the brightness of the existing components. | | | Resistance | The total resistance is
Would you prefer to focus on instead of circuits?
A) An ammeter connected in parallel with the bulb. B) A voltmeter connected in parallel with the bulb. C) An ammeter connected in series with the bulb. D) A voltmeter connected in series with the bulb. 2. A circuit has a resistance of and a current of . What is the voltage?