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प्रश्न
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उत्तर
An electric fuse is a safety device which is used to limit the current in an electric circuit. The use of a fuse thus safeguards the circuit and appliances connected in that circuit from being damaged.
A fuse is generally made of an alloy of lead and tin.
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संबंधित प्रश्न
The work done in moving a unit charge across two points in an electric circuit is a measure of ______.
Which unit could be used to measure current?
(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
- Which circuit would have the highest voltage across each bulb?
- In which circuit would the bulbs be brighter?
- In which circuit, if one bulb blows out, all others will stop glowing?
- Which circuit would have less current in it?
State the relation between work, charge and potential difference for an electric circuit.
Tell the odd one out. Give a proper explanation.
Find the effective resistance in the following circuit diagrams (Fig.):
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
What is the SI unit for the current?
In a vacuum, the particles that can act as charge carriers are:
