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संबंधित प्रश्न
1 A = _________ mA
- 102
- 103
- 10-3
- 10-6
Draw the electrical symbols of the following components and state its use:
Rheostat (variable resistance)
Which instrument is used to measure electric current? How should it be connected in a circuit?
What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?
Define the term resistivity.
Tick (✓) the correct choice among the following :
Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
What should I choose ___________________
b. for getting protection from electric current.
c. to measure the current in the circuit?
