UCE (O-Level) Electric circuits — practice questions
8 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice UCE (O-Level) Electric circuits in the app →Ohm's law describes a metal conductor only while which quantity is held constant?The filament of a light bulb gets much hotter as the supply voltage rises, so its resistance changes. What kinThree resistors are joined one after another in a single loop with a cell. How does the current in the second Three resistors are connected side by side across the same cell. Which quantity is the same across every one oHow is the equivalent resistance of several resistors joined in series worked out?A current of 4 amperes passes through a heater while the voltage across it is 12 volts. What power does the heA lamp dissipates 60 watts and is left on for 120 seconds. How much electrical energy does it use?Household electricity is sold in units of one kilowatt hour. What does one kilowatt hour mean?