No student devices needed. Know more
16 questions
Full form of MCB is
miniature circuit breaker
most circuit breaker
maximum circuit breaker
none of these
Which component of a circuit converts chemical energy into electrical energy?
Electric cell
Electric bell
Connecting wires
Electric switch
Which of the following appliances does not use the heating effect of current?
Electric heater
Electric bell
Electric geyser
Electric bulb
Name the metal used to make filament of a bulb.
Who discovered heating effect of electric current?
Thomas Alva Edison
James Prescott Joule
Andre Marie Ampere
Alessandro Volta
The element of electric iron is made of copper.
TRUE
FALSE
Name the material used to make fuse wire.
Tin
Copper
Tungsten
Alloy of tin and lead
What is the SI unit of current?
Ampere
Volt
Joule
Calorie
Name the appliance which detects the presence of current in the circuit.
Electric bulb
Electric cell
Electric switch
Ammeter
__________ automatically trips when there is excess of current in the circuit.
What is the role of voltmeter in a circuit?
To measure current in the circuit
To measure potential difference in the circuit
To detect current in the circuit
None of these
The bulb is not glowing in this circuit. What can be reasons for this?
Switch is open
Circuit is broken
Battery is connected properly
All of these
What are responsible for the flow of electric current?
protons
Electrons
neutrons
atoms
Why Tin-Lead alloy is used to make fuse?
Due to its low melting point
Due to high melting point
Due to its brittleness
None of these
When too many appliances draw large amount of current at the same time, it is known as
Short circuiting
heating effect
Overloading
Identify the symbol for battery
Explore all questions with a free account