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Name one D.C. source and one A.C. source.
(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.
State whether the resistance of filament of a bulb will decrease, remain unchanged or increase when it glows.
In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
The following Figure represents a negatively charged gold Ieaf electroscope. Label the parts, P, Q, and R and the estate whether each is an insulator or a conductor. Also, indicate the distribution of charges on the system in the diagram.
