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WorksheetsElectric currents and its affects
Total questions: 21
Worksheet time: 11mins
IN WHICH CIRCUIT BULB GLOWS?
OPEN CIRCUIT
CLOSED CIRCUIT
NONE OF THE ABOVE
How many terminals a cell has
Two, both positive
Two, both negative
Two, one positive and another negative
None of the above
An electromagnet does not attract a piece of iron
True
False
Which of the following is most electricity efficient
Incandescent Bulbs
Compact Fluorescent Lamp (CFL)
Light Emitting Diode (LED) Lamp
Sodium Lamp
The coil of wire contained in an electric heater is known as:
Component
Element
Circuit
Spring
The filament of an electric bulb is made of:
Iron
Copper
Tungsten
Aluminum
Crane has a ----------------------------------- attached to it
(a)
The metal which is poor conductor of electricity is:
Gold
Iron
Aluminum
Mercury
WHO DISCOVERED THAT WHEN AN ELECTRIC CURRENT(DC) IS PASSED THROUGH ANY CONDUCTOR, A MAGNETIC FIELD IS PRODUCED AROUND IT.
BILL GATES
HANS CHRISTIAN TALWAR
HANS CHRISTIAN OERSTED
1.An electric current can produce
heating effect only.
chemical effect only.
magnetic effect only.
chemical, heating, and magnetic effects.
