NDA Electricity — practice questions
15 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NDA Electricity in the app →Ohm's law states that the current I through a conductor is proportional to:SI unit of electric current is:Resistance R of a uniform wire of length L and cross-sectional area A is:Two resistors of 6 Ω and 3 Ω are connected in PARALLEL. The equivalent resistance is:Two resistors 6 Ω and 3 Ω are in SERIES. Their equivalent resistance is:Heat produced in a resistor in time t (Joule's law) is:An electric bulb is marked '60 W, 220 V'. The resistance of its filament is approximately:1 kilowatt-hour (kWh), the commercial unit of electrical energy, equals:An ideal ammeter has:Resistivity of a metal as temperature increases:Among Cu, Al, Fe and Hg, the BEST conductor of electricity at room temperature is:A potential difference of 12 V drives a current of 3 A through a resistor. The resistance is:The dimension of the volt is:Domestic appliances in India are connected in:Electric fuse is a SAFETY device that: