Advertisements
Advertisements
Question
Observe the following figure which bulb get fuse?
Solution
Bulb A
APPEARS IN
RELATED QUESTIONS
What do the following symbols mean in circuit diagrams?
What do the following symbols mean in circuit diagrams?
Draw circuit symbols for
fixed resistance
Draw circuit symbols for
a battery of three cells
What is a circuit diagram
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.
How does the short circuit form? What is its effect?
Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
The accompanying figure shows some electrical appliances connected in a circuit in a house. Answer the following questions.
- By which method are the appliances connected?
- What must be the potential difference across individual appliances?
- Will the current passing through each appliance be the same? Justify your answer.
- Why are the domestic appliances connected in this way?
- If the T.V. stops working, will the other appliances also stop working? Explain your answer.
In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing?
The unit of electrical power is _______.
How much is the potential difference between live and neutral wires?
Write scientific reason.
It is beneficial to carry electrical energy in AC form as it is carried over long distances.
______ is the device used to close or open an electric circuit.
The switch is used to close or open an electric circuit.
Draw the circuit diagram for the series connection.
In the circuit shown, which switches (L,M or N) must be closed to light up the bulb?
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
Which of the following a simple circuit must-have?
What is electric circuit?
Explain about domestic electric circuits. (circuit diagram not required)
Assertion: In an open circuit, the current passes from one terminal of the electric cell to another.
Reason: Generally, the metal disc of a cell acts as a positive terminal.
The rate of flow of electric charges in a circuit is called ______.
What are the types of electric circuits?
In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source. Which of the following is likely to happen regarding their brightness?
In an electric circuit, the current starts from ______.
Draw the symbols of the following circuit components.
switch in off position
Paheli connected two bulbs to a cell as shown in Fig. 12.8.
She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.
Write a short note on the different electrical circuits.
Overloading of electric circuits can lead to short-circuiting.
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
