Electric Circuits
Important Questions on Electric Circuits
In the circuit diagram shown below:
What will be the order in which the bulbs , and will glow when the switch is moved to the ‘on’ position?
What is the name of a safety device which cuts off the electricity supply during a short circuit by breaking a thin wire?
What is the name of a safety device which cuts off the electricity supply during a short circuit by turning off a switch?
Name the phenomenon which occurs when too many electrical appliances are connected to a single socket.
Name the phenomenon which occurs when the two naked wires of electricity supply line touch each other.
Compact fluorescent lamp (CFL) works on the heating effect of current.
A compact fluorescent lamp (CFL) has a filament in it.
A car battery is just one big cell.
A battery is made by connecting positive terminal of one cell with the positive terminal of the other cell.
Name the electrical component having the following symbol:
In the circuit diagram shown below:
Would any of the bulbs glow when the switch is in the ‘off position?
The figure given below shows four cells fixed on a wooden board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.
Two separate sets of two cells each are shown below. Draw lines to indicate how you will connect their terminals with wires to make batteries of two cells each.
The bulb in the circuit shown below does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.
The compact fluorescent electric lamp has:
The filament of an electric bulb is made of a thin wire of:
At the time of short circuit, the current in the circuit:
What is meant by a battery? How will you arrange two cells to make a battery? Explain with the help of a diagram. Mark the terminals (+ and -) of both the cells.
Name five appliances (or devices) in which electric cells are used.
Draw the circuit diagram to represent the circuit shown below.
