Advertisements
Advertisements
Question
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
Advertisements
Solution
Generator.
All others are related to safety measures to avoid mishap due to electricity.
APPEARS IN
RELATED QUESTIONS
Draw circuit symbols for variable resistance
Draw circuit symbols for
a battery of three cells
Draw circuit symbols for
an open switch
What is a circuit diagram
Draw a circuit diagram to show how 3 bulbs can be lit from a battery so that 2 bulbs are controlled by the same switch the third bulb has its own switch.
Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.
Tell the odd one out. Give proper explanation.
How does the short circuit form? What is its effect?
The following figure shows the symbols for components used in the accompanying electrical circuit. Place them at proper places and complete the circuit.
Which law can you prove with the help of above circuit?
Resistances R1, R2, R3 and R4 are connected as shown in the figure. S1 and S2 are two keys. Discuss the current flowing in the circuit in the following cases.
- Both S1 and S2 are closed.
- Both S1 and S2 are open.
- S1 is closed but S2 is open.
Match the column ‘A’ with column ‘B’.
|
Column ‘A’
|
Column ‘B’ |
|
(1) Eka - boron
|
(a) Germanium
|
|
(2) Eka - Aluminium
|
(b) Scandium
|
|
(3) Eka - Silicon
|
(c) Gallium |
Name the instrument used to control current in an electric circuit.
If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?
Find the odd one out and give its explanation.
What is the potential difference?
Increasing the current passing through the wire decreases the magnetic field intensity.
Flow of electricity through a closed circuit is _____.
______ is the device used to close or open an electric circuit.
Draw the circuit diagram for the series connection.
Tabulate the different components of an electric circuit and their respective symbols.
In which of the following circuits are the bulb connected in series?
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
When a circuit is open, _____ cannot pass through it.
What are the types of electric circuits?
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
Our body is a ______ of electricity.
In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?
Paheli is running short of connecting wires. To complete an electric circuit, she may use a ______.
In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?
Name the device which is used to measure the strength of the electric current in an electric circuit.
A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire
How is Joule's law effect useful in electric circuits where fuse is used as a safety device?
