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प्रश्न
What is the potential difference?
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उत्तर
The potential difference is the difference in the electric potential of two different points.
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संबंधित प्रश्न
Draw circuit symbols for
a cell
Draw circuit symbols for
an open switch
What is a circuit diagram
Tell the odd one out. Give proper explanation.
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?
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?
What do you understand by the closed electric circuit
Draw a neat diagram showing a closed electric circuit.
Draw a neat diagram showing a open electric circuit.
Name the instrument used to control current in an electric circuit.
How much is the potential difference between live and neutral wires?
Nowadays MCBs are used in homes, for stop the current in the circuit which suddenly increases.
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 which among the following circuits does 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 ______.
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?
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?
Study the three electric circuits below. Each of them has a glass rod (G), a steel rod (S), and a wooden rod (W).
In which of the electric circuits would the bulb not light up.
Which of the following a simple circuit must-have?
_____ has a thin metallic filament that melts and breaks the connection when the circuit is overheated.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
State whether true or false. If false, correct the statement.
Ammeter is connected in parallel in any electric circuit.
In a simple circuit, why does the bulb glow when you close the switch?
Explain about domestic electric circuits. (circuit diagram not required)
A device that is used to break an electric circuit is called ______.
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.
Name the device used these days in place of electric fuses in electrical circuits.
In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?
Overloading of electric circuits can lead to short-circuiting.
How is Joule's law effect useful in electric circuits where fuse is used as a safety device?
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.
