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प्रश्न
Tell the odd one out. Give proper explanation.
विकल्प
Fuse wire
Bad conductor
Rubber gloves
Generator
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उत्तर
Generator
Explanation:
Others restrict flow of current while generator is used to produce current.
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संबंधित प्रश्न
Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.
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 closed switch
What is a circuit diagram
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?
How does the short circuit form? What is its effect?
Observe the following figure which bulb get fuse?
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?
Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagrams.
Draw a neat diagram showing a open electric circuit.
Explain the following:
Open 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?
If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?
Nowadays MCBs are used in homes, for stop the current in the circuit which suddenly increases.
What is the use of earthing wire?
The switch is used to close or open an electric circuit.
In the circuit diagram below, 10 units of electric charge move past point x every second What is the current in the circuit ______.
In which of the following circuits are the bulb connected in series?
Draw the circuit diagram for the following series connection
Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up
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.
When a circuit is open, _____ cannot pass through it.
______ is a kind of fish which is able to produce an electric current.
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) |
Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4 Ω resistors? Give reason.
Choose the statement which is not correct in the case of an electric fuse.
Name the device used these days in place of electric fuses in electrical circuits.
Observe the circuit given:
1. Would any of the bulbs glow when the switch is in the ‘OFF’ position?
2. What will be the order in which the bulbs A, B, and C will glow when the switch is moved to the ‘ON’ position?
The ______ is a species of fish that can give electric shocks of up to six hundred fifty watts of electricity.
Name the device which is used to measure the strength of the electric current in an electric circuit.
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.
