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प्रश्न
A device that is used to break an electric circuit is called ______.
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उत्तर
A device that is used to break an electric circuit is called switch.
संबंधित प्रश्न
Draw circuit symbols for
fixed resistance
Match the column ‘A’ with column ‘B’.
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Column ‘A’
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Column ‘B’ |
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(1) Eka - boron
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(a) Germanium
|
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(2) Eka - Aluminium
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(b) Scandium
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(3) Eka - Silicon
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(c) Gallium |
Answer the following question.
With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances.
The switch is used to close or open an electric circuit.
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
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 |
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| (i) | (ii) | (iii) |
In the following arrangement shown in the following figure, the bulb will not glow if the ends A and B are connected with
In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?
Write a short note on the different electrical circuits.
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.
