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प्रश्न
Name the device used these days in place of electric fuses in electrical circuits.
What device could be used in place of the fuses?
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उत्तर
Miniature circuit breaker (MCB)
संबंधित प्रश्न
Draw circuit symbols for variable resistance
Draw circuit symbols for
A closed switch
Tell the odd one out. Give a proper explanation.
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?
What do you understand by the open electric circuit?
Name the instrument used to control current in an electric circuit.
In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?
Right or wrong sentence.
Increasing the current passing through the wire decreases the magnetic field intensity.
Draw the circuit diagram for the series connection.
In which among the following circuits does the bulb glow?
Higher Order Question
A student made a circuit by using an electric cell, a switch, a torch bulb (fitted in the bulb holder), and copper connecting wires. When he turned on the switch, the torch bulb did not glow at all. The student checked the circuit and found that all the wire connections were tight.
- What could be the possible reason for the torch bulb not glowing even when the circuit appears to be complete?
Which of the following a simple circuit must-have?
Explain about domestic electric circuits. (circuit diagram not required)
A device that is used to break an electric circuit is called ______.
In a circuit, if the key is in open (off) condition, then electricity will not flow.
What are the types of electric circuits?
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
 |
 |
 |
| (i) | (ii) | (iii) |
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
A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.
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?
The ______ is a species of fish that can give electric shocks of up to six hundred fifty watts of electricity.
What are the essential components of an electric circuit?
Paheli is running short of connecting wires. To complete an electric circuit, she may use a ______.
Paheli connected two bulbs to a cell as shown in the following figure.
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.
