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Increasing the current passing through the wire decreases the magnetic field intensity. - Science and Technology 1

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प्रश्न

Increasing the current passing through the wire decreases the magnetic field intensity.

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उत्तर

Increasing the current passing through the wire decreases the magnetic field intensity- Wrong

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अध्याय 4: Effects of electric current - Right or Wrong sentence

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
अध्याय 4 Effects of electric current
Right or Wrong sentence | Q 3

संबंधित प्रश्न

What do the following symbols mean in circuit diagrams?  


Draw circuit symbols for  

 a cell 


Draw circuit symbols for 

A closed switch


Draw the labelled diagram of an electric circuit comprising of a cell, a resistance, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance : an ammeter or a voltmeter?


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.


Explain the construction and working of the following. Draw a neat diagram and label it.

Electric motor


How does the short circuit form? What is its effect?


A battery is to be formed by joining 3 dry cells with connecting wires. Show how will you connect the wires by drawing a diagram.


What do you understand by an electric circuit?

Write the condition required for a circuit to be a closed circuit. 


What is an artificial magnet?

Find the odd one out and give its explanation.


How much is the potential difference between live and neutral wires?


The switch is used to close or open an electric circuit.


Tabulate the different components of an electric circuit and their respective symbols.


Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?


In the circuit diagram below, 10 units of electric charge move past point x every second What is the current in the circuit ______.


Three bulbs are connected end to end from the battery. This connection is called _______.


What is electric circuit?


Instead of metal wires, a jute string can be used to make a circuit.


In a circuit, if the key is in open (off) condition, then electricity will not flow.


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


Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2Ω in series with a combination of two resistors (4Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2Ω resistor be the same as that across the parallel combination of 4Ω resistors? Give reason.


When an electric current flows through a copper wire AB as shown in Figure14.1, the wire


Three bulbs A, B, and C are connected in a circuit as shown in Figure 14.2. When the switch is ‘ON’


Name the device used these days in place of electric fuses in electrical circuits.


In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1


What are the essential components of an electric circuit?


In the following arrangement shown in Fig. 12.2, the bulb will not glow if the ends A and B are connected with


Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.


Write a short note on the different electrical circuits.


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


Assertion: People struck by lightning receive a severe electrical shock.

Reason: Lightning carries very high voltage.


Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.


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