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प्रश्न
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उत्तर
An ammeter is a low resistance device; hence it is connected in series.
A voltmeter is a high resistance device; hence it is connected in parallel.
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संबंधित प्रश्न
Which statement/statement is/are correct?
1. An ammeter is connected in series in a circuit and a voltmeter is connected in parallel.
2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.
(a) 1, 2, 3
(b) 1, 2
(c) 2, 3
(d) 1
A 5 V battery is connected to two 20 Ω resistors which are joined together in series.
(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
Coulomb is the SI unit of ____________.
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
Define the following:
Conventional current
