Basic Electricity, Circuits, Current, Voltage, Resistance, & Ohm’s Law Target Level: Form 2 (Ages 13–14) Total Marks: 50 Time Suggested: 60 minutes
For the application, each group had to invent an everyday device that uses conductors and insulators. Luka suggested a bicycle light: metal wires connect the battery to the lamp, while the handlebar grips use rubber to protect the rider’s hands. Siti sketched a school locker alarm that lights up if the metal door closes improperly—metal contacts and insulated wiring keeping students safe. f2 science electricity exercise top
They began by connecting the battery, bulb, and wires. The bulb glowed a soft orange. “Success!” Luka whispered. Mr. Adebayo smiled and nodded. Next came testing. They touched the paperclip into the circuit and the bulb shone brighter. When they tried the wooden skewer, the bulb stayed dim. The rubber strip did nothing at all. They began by connecting the battery, bulb, and wires
Explanation: The "top rule" for parallel circuits: Voltage is the same across every branch. The battery pushes 6V, so every component gets the full 6V. They began by connecting the battery