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प्रश्न
Which of the following is correct?
पर्याय
Rate of change of charge is electrical power.
Rate of change of charge is current.
Rate of change of energy is current.
Rate of change of current is charge.
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उत्तर
Rate of change of charge is current.
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संबंधित प्रश्न
Why does the cord of an electric heater not glow while the heating element does?
Write Joule's law of heating.
Why does the connecting cord of an electric heater not glow hot while the heating element does?
An electric fuse works on the:
(a) chemical effect of current
(b) magnetic effect of current
(c) lighting effect of current
(d) heating effect of current
An electric iron is connected to the mains power supply of 220 V. When the electric iron is adjusted at 'minimum heating' it consumes a power of 360 W but at 'maximum heating' it takes a power of 840 W. Calculate the current and resistance in each case.
Write two devices based on the heating effect of electric current.
Why is parallel arrangement used in domestic wiring?
B1, B2 and B3 are three identical bulbs connected as shown in Figure. When all the three bulbs glow, a current of 3A is recorded by the ammeter A.
- What happens to the glow of the other two bulbs when the bulb B1 gets fused?
- What happens to the reading of A1, A2, A3 and A when the bulb B2 gets fused?
- How much power is dissipated in the circuit when all the three bulbs glow together?
Name a few appliances which work on the basis of the heating effect of current.
The electric fuse works on the Joule heating principle.
