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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
Redraw the circuit of question 1, putting in an ammeter to measure the current through the resistors and a voltmeter to measure the potential difference across the 12 Ω resistors. What would be the readings in the ammeter and the voltmeter?
Draw circuit symbols for
fixed resistance
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.
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.
Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagrams.
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?
What is the potential difference?
Fuse is
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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| (i) | (ii) | (iii) |
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
