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
A block of mass m slides down a smooth vertical circular track. During the motion, the block is in:
- Vertical equilibrium.
- Horizontal equilibrium.
- Radial equilibrium.
- None of these.
When a light wave goes from air into water, the quality that remains unchanged is its
|
(a) Speed |
(b) Amplitude |
(c) Frequency |
(d) Wavelength |
The relation between Ip and Vp for a triode is 
, Keeping the grid potential constant at 1V, the value of rp will be
|
(a) 8 kW |
(b) 4 kW |
(c) 2 kW |
(d) 8 kW |
Which of the following statement(s) is/ are correct?
Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a
|
(a) Vertical plane |
|
(b) Horizontal plane |
|
(c) Plane making an angle of 45o with the vertical |
|
(d) Plane making an angle of 57o with the horizontal |
Assertion : Photoelectric effect demonstrates the wave nature of light.
Reason : The number of photoelectrons is proportional to the frequency of light.
|
(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. |
The radius of a circular loop is r and a current i is flowing in it. The equivalent magnetic moment will be
|
(a) ir |
(b) 2πir |
(c) iπ |
(d) |
A short bar magnet with its north pole facing north forms a neutral point at P in the horizontal plane. If the magnet is rotated by 90o in the horizontal plane, the net magnetic induction at P is (Horizontal component of earth’s magnetic field = 
)
|
(a) 0 |
(b) 2 |
(c) |
(d) |
The graph Shows the variation in magnetic flux ∅(t) with time through a coil. Which of the statements given below is not correct
|
(a) There is a change in the direction as well as magnitude of the induced emf between B and D |
|
(b) The magnitude of the induced emf is maximum between B and C |
|
(c)There is a change in the direction as well as magnitude of induced emf between A and C |
|
(d) The induced emf is zero at B |
Suppose, the acceleration due to gravity at the earth's surface is 10ms-2 and at the surface of Mars it is 4⋅0ms-2. A 60kg passenger goes from the earth to the Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of best represents the weight (net gravitational force) of the passenger as a function of time?
- A
- B
- C
- D