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Question
Name the instrument used to control the current in an electric circuit.
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Solution 1
A rheostat is used to control current in an electric circuit.
Solution 2
RELATED QUESTIONS
What is a primary cell?
What is a secondary cell?
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.

Explain the concept of electric potential difference in terms of work done in transferring the charge.
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