ICSE Class 10 Physics Semester 1 Question Paper. We covered all the ICSE Class 10 Physics Semester 1 Question Paper in this post for free so that you can practice well for the exam.
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ICSE Class 10 Physics Semester 1 MCQs for Students
D.C ammeter is connected in a circuit through which A.C of 50 Hz flows. The ammeter would read :
(A) Peak value of current
(B) Average current
(C) Zero
(D) RMS value of current
Option c – Zero
An ammeter should have very low resistance, so that it may :
(A) Not burnout
(B) Have better stability
(C) Show large deflection.
(D) Not change the value of current
Option d – Not change the value of current
An ammeter has a resistance of G Ω and a range of I ampere. The value of the resistance used in parallel to convert it into an ammeter of range nl amperes is :
(A) n G
(B) G/n
(C) (n-1) G
(D) G/(n-1)
Option d – G/(n-1)
If the galvanometer current is 10 mA, the resistance of the galvanometer is 40 Ω and the shunt of 2 Ω is connected to the galvanometer, the maximum current which can be measured by the ammeter is
(A) 0.21 A
(B) 210 A
(C) 2.1 A
(D) 21 A
Option a – 0.21 A
An ammeter has a resistance of 100 Ω. A potential difference of 50 mV between its terminals gives full-scale deflection. How will you convert it into an ammeter of range 5A? :
(A) 0.01 Ω In parallel
(B) 0.1 Ω In parallel
(C) 1 Ω In parallel
(D) 10 Ω In parallel
Option a – 0.01 Ω In parallel
In an ammeter, 5% of the main current is passing through the galvanometer. If the resistance of the galvanometer is G then the resistance of the shunt will be :
(A) G/19
(B) G/5
(C) 5G
(D) 19G
Option a – G/19
To send 10 % of the main current through a moving coil galvanometer of resistance 99 Ω, the shunt required is :
(A) 9.9 Ω
(Β) 10 Ω
(C) 11 Ω
(D) 9 Ω
Option c – 11 Ω
This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements. Statement – I: Higher the range, the greater the resistance of the ammeter. Statement II: To increase the range of the ammeter, an additional shunt needs to be used across it.
(A) Statement- I is true, Statement – II is true, Statement – II is the correct explanation of Statement I
(B) Statement- I is true, Statement – II is true, Statement II is not the correct explanation of Statement – I.
(C) Statement – I is true, and Statement – II is false.
(D) Statement – I is false, and Statement – II is true.
Option c – Statement – I is true, and Statement – II is false
When an ammeter is connected in series the resistance of the circuit is :
(A) Increased
(B) Decreased
(C) Unchanged
(D) Sometimes increases
Option b – Decreased
The resistance of an ideal Ammeter is :
(A) Zero
(B) Low
(C) High
(D) Infinite
Option a – Zero
The parallel combination of galvanometer and shunt is called :
(A) Voltmeter
(B) Ohmmeter
(C) Ammeter
(D) Speedometer
Option c – Ammeter
The range of the ammeter can be increased by :
(A) Decreasing the shunt
(B) Increasing the shunt
(C) Changing the scale
(D) Removing the shunt.
Option a – Decreasing the shunt
The resistance of an ammeter in the 1-ampere range is 0.018 Ω. How will you convert it to an ammeter measuring upto 10 A :
(A) 1Ω In parallel
(B) 0.02 Ω In parallel
(C) 0.002 Ω In parallel
(D) 0.001 Ω In parallel
Option c – 0.002 Ω In parallel
Voltmeter reading up to 150 volts can be converted into an ammeter of 8 A range, having a resistance of 300 Ω is :
(A) 20Ω in series
(B) 20Ω in parallel
(C) 10Ω in series
(D) 10Ω in parallel
Option b – 20Ω in parallel
An ammeter consists of a galvanometer of resistance 50 Ω and an external resistance of 5 Ω. The resistance of the ammeter is :
(A) 5 Ω
(Β) 45 Ω
(C) 4.5 Ω
(D) 55 Ω
Option c – 4.5 Ω
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