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Name the instrument used to control the current in an electric circuit.
(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.
What do you understand by the term electric current?
State two conditions necessary for a circuit, such that electric current flows through it.
What do you understand by the term series circuit?
Draw a diagram showing two bulbs connected in series to a dry cell.
What do you mean by the potential difference? Write its SI unit.
Compare the brightness of two 60 watt bulbs.
When they are connected in parallel.
Explain giving scientific reasons.
