WorksheetsElectric current and its effects
Total questions: 12
Worksheet time: 6mins
Electric cell has
+ve and -ve terminal
chemicals
wire
both A and B
In the bulb there is a thin wire called
light
filament
wire
heater
What is open circuit
switch in OFF position
bulb not glowing
disconnected wire
all of these
When a bulb is fused its filament
(a)
A wire gets hot when electric current passes through it
magnetic effect
heating effect
cooling effect
none
Coil of wire in room heater is called
filament
element
connecting wire
none of these
Heating effect is used in
room heater
electric fuse
geyser
all of these
A safety device
electric fuse
electric bell
fan
none
Name of the scientist who discovered magnetic effect of electricity
Thomas Edison
Hans Christian Oersted
Alexander G Bell
none of these
What is electromagnet
current carrying coil of insulated wire wrapped around a piece of iron
bar magnet
horseshoe magnet
Electric bell works on______ effect of current
heating effect
magnetic effect
lighting effect
none of these
Electric bell has
motor
permanent magnet
electromagnet
