here is a free online test on electric current
ELECTRIC CURRENT AND ELECTRICITY
Results
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HD Quiz powered by harmonic design
#1. The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is
#2. Work of 14 J is done to move 2 C charge between two points on a conducting wire. What is the potential difference between the two points?
#3. A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
#4. What is the relationship between resistance and current?
#5. A current of 1 A is drawn by a filament of an electric bulb. The number of electrons passing through a cross-section of the filament in 16 seconds would be roughly
#6. A cooler of 1500 W, 200 volts and a fan of 500 W, 200 volts are to be used from a household supply. The rating of the fuse to be used is
#7. In an electrical circuit, two resistors of 2 Ω and 4 Ω, respectively, are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be
#8. Two bulbs are rated 40W, 220W and 60W, 220W. The ratio of their resistances will be
#9. An electric toaster has a power rating of 200 W. It operates for 1 hour in the morning and 1 hour in the evening. How much does it cost to operate the toaster for 10 days at Rs. 5 per kW h?
#10. A coil in the heater consumes power P on passing current. If it is cut into halves and joined in parallel, it will consume power
