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प्रश्न
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उत्तर
Characteristics of fuse wire:
(i) It should have low melting point.
(ii) It should have high resistance.
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संबंधित प्रश्न
Calculate the number of electrons constituting one coulomb of charge.
By what name is the physical quantity coulomb/second called?
A student made an electric circuit shown here to measure the current through two lamps.
Are the lamps in series or parallel?
(a) Are the lamps in series or parallel?
(b) The student has made a mistake in this circuit. What is the mistake?
(c) Draw a circuit diagram to show the correct way to connect the circuit. Use the proper circuit symbols in your diagram.
Define the term resistivity.
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
Fill in the blank :
1 mA = ............................. A.
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
By convention, the direction of electric current in the external circuit is taken as:
