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प्रश्न
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
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उत्तर
The reason is that when the cell is being used, there is a drop in potential across the internal resistance of the cell.
संबंधित प्रश्न
The SI unit of charge is volt.
The p.d. across a 3 Ω resistor is 6 V. The current flowing in the resistor will be:
(a) `1/2A`
(b) 1 A
(c) 2 A
(d) 6 A
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(b) for lighting inside the rooms of the hotel?
Three resistors of 6.0 𝛀, 2.0𝛀 and 4.0𝛀 are joined to an ammeter A and a cell of e.m.f. 6.0 V as
shown in fig 8.52 Calculate:
(a) the effective resistance of the circuit and
(b) the reading of ammeter.
Tick(✓) the correct choice in the following:
Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?
Define the following:
Electromotive force
What should I choose ___________________
b. for getting protection from electric current.
c. to measure the current in the circuit?
True or False – If False give the correct answer
The representation of the electric current is A
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
An ammeter is always placed in parallel with the circuit.
