MCQ
Identify the correct options:
- AAn ammeter should have small resistance.
- BAn ammeter should have large resistance.
- CA voltmeter should have small resistance.
- DA voltmeter should have large resistance.
✓
Answer
- An ammeter should have small resistance.
-
A voltmeter should have large resistance.
Explanation:
Þ An ammeter should have small resistane. To measure the accurate reading of current in the circuit by Ammeter.
þ A voltmeter should have large resistance. To measure the accurate reading of voltage across voltmeter.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An object is placed 12 cm to the left of a converging lens of focal length 8 cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce
|
(a) No image |
(b) A virtual enlarged image |
|
(c) A real enlarged image |
(d) A real smaller image |
Serious draw back of the semiconductor device is
|
(a) They cannot be used with high voltage |
|
(b) They pollute the environment |
|
(c) They are costly |
|
(d) They do not last for long time |
Outside a nucleus
|
(a) Neutron is stable |
|
(b) Proton and neutron both are stable |
|
(c) Neutron is unstable |
|
(d) Neither neutron nor proton is stable |
A metallic square loop ABCD is moving in its own plane with velocity v in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced
|
(a) In AD, but not in BC |
(b) In BC, but not in AD |
|
(c) Neither in AD nor in BC |
(d) In both AD and BC |
The component of a vector is:
- Always less than its magnitude.
- Always greater than its magnitude.
- Always equal to its magnitude.
- None of these.
Assertion : A spark occur between the poles of a switch when the switch is opened.
Reason : Current flowing in the conductor produces magnetic field.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
Which of the following products in a hydrogen atom are independent of the principal quantum number n? The symbols have their usual meanings.
According to kinetic theory of matter, a molecule is the smallest particle of a substance and it possesses :
Which one did Rutherford consider to be supported by the results of experiments in which α-particles were scattered by gold foil?
Unpolarized light of intensity 32Wm–2 passes through three polarizers such that transmission axes of the first and second polarizer makes and angle 30° with each other and the transmission axis of the last polarizer is crossed with that of the first. The intensity of final emerging light will be
|
(a) 32 Wm–2 |
(b) 3 Wm–2 |
(c) 8 Wm–2 |
(d) 4 Wm–2 |