Advertisements
Advertisements
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
उत्तर
The correct statement is:
(d) 1
An ammeter is connected in series in a circuit and a voltmeter is connected in parallel. The other two statements are incorrect as an ammeter should have a very low resistance and a voltmeter should have a high resistance.
APPEARS IN
संबंधित प्रश्न
State the factors on which the strength of electric current flowing in a given conductor depends.
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
Christmas tree lamps are usually wired in series. What happens if one lamps breaks?
An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?
An electric bulb is rated as 10 W, 220 V. How many of these bulbs can be connected in parallel across the two wires of 220 V supply line if the maximum current which can be drawn is 5 A?
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.
Find the effective resistance in the following circuit diagrams (Fig.):
Complete the following table. The first answer has been given as an example
Quantity | Unit |
(a) Electrical potential Volt ( b) Resistance ( c) Power ( d) Energy ( e) Resistivity |
Volt ........ .......... ............ .............. |
Which of the following represents voltage?
Define the following:
Conventional current and electron current